Gmail Calendar doesn't sync

HI, I am trying to sync my 2 gmail calendars and I am getting the following error:

MailExceptions.OperationException: Synchronizing folder ‘--------’ failed with an error: Index was out of range. Must be non-negative and less than the size of the collection.
Index was out of range. Must be non-negative and less than the size of the collection.

How can I fix this issue?

Hi,
can you please open Operations window, tab Logs, copy all the text and post it here? Thank you.

9:32:58 AM Online state: changed to online with reason NetworkAvailability
9:33:02 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/
9:33:02 AM [email protected] [GData] Synchronizing folder list
9:33:03 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Contacts/’
9:33:03 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/
9:33:03 AM [email protected] [GData] Synchronizing folder list
9:33:04 AM [email protected] [GData] Synchronizing folder list
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/Inbox
9:33:04 AM [email protected] [GData] Synchronizing folder ‘[email protected]/[email protected]/’
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/Inbox
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/Wedding
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/CMS
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:04 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/All Mail
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/SME
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Drafts
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Important
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Sent Mail
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Spam
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Starred
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Trash
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing messages: For folder [email protected]/Inbox
9:33:05 AM [email protected] [GData] Synchronizing folder ‘[email protected]/[email protected]/’
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:05 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/All Mail
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Sent Mail
9:33:06 AM [email protected] [IMAP] Synchronizing messages: For folder [email protected]/Inbox
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Starred
9:33:06 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Busan/’
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: For folder [email protected]/[Gmail]/Trash
9:33:06 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Small Conference Room/’
9:33:06 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Brussels/’
9:33:06 AM [email protected] [IMAP] Synchronizing subfolders: Done
9:33:06 AM [email protected] [IMAP] Synchronizing messages: For folder [email protected]/Inbox
9:33:07 AM [email protected] [GData] Synchronizing folder ‘[email protected]/DG External Event Calendar/’
9:33:07 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Paris/’
9:33:07 AM [email protected] [IMAP] Synchronizing messages: For folder [email protected]/Inbox
9:33:07 AM [email protected] [IMAP] Synchronizing messages: Done
9:33:07 AM [email protected] [GData] Synchronizing folder ‘[email protected]/OpenGov Hub/’
9:33:08 AM [email protected] [GData] Synchronizing folder ‘[email protected]/London/’
9:33:08 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Hanoi/’
9:33:08 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Carlisle/’
9:33:09 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Rome/’
9:33:09 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Helsinki/’
9:33:09 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Monterrey/’
9:33:09 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Brasilia/’
9:33:10 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Cancun/’
9:33:10 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Stockholm/’
9:33:10 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Zunia - Editorial Calendar and Tasks/’
9:33:10 AM MailExceptions.OperationException: Synchronizing folder ‘[email protected]/Zunia - Editorial Calendar and Tasks/’ failed with an error: Index was out of range. Must be non-negative and less than the size of the collection.
9:33:10 AM Parameter name: index —> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
9:33:10 AM Parameter name: index
9:33:10 AM at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
9:33:10 AM at System.ThrowHelper.ThrowArgumentOutOfRangeException()
9:33:10 AM at System.Collections.Generic.List1.get\_Item(Int32 index) 9:33:10 AM at MailClient.TimeZone.TimeZoneInfo.SystemTimeToObservance(RegistryTimeZoneInformation tzi, SystemTime onset, String name, ObservanceType observanceType, Int32 startYear, Int32 endYear) 9:33:10 AM at MailClient.TimeZone.TimeZoneInfo.ParseObservances(List1 observances, RegistryTimeZoneInformation tzi, String standardName, String daylightName, Int32 startYear, Int32 endYear)
9:33:10 AM at MailClient.TimeZone.TimeZoneInfo.FromRegistryKey(String id, RegistryKey registryKey)
9:33:10 AM at MailClient.TimeZone.TimeZoneInfo.FindSystemTimeZoneById(String id)
9:33:10 AM at MailClient.Protocols.Gdata.EventConvert.ParseTimeZone(EventDateTime dateTime)
9:33:10 AM at MailClient.Protocols.Gdata.EventConvert.ConvertDateTime(EventDateTime dateTime, TimeZoneInfo& timeZone)
9:33:10 AM at MailClient.Protocols.Gdata.EventConvert.ConvertEvent(Event evnt)
9:33:10 AM at MailClient.Protocols.Gdata.CalendarItemSynchronizer.b__f(Event e)
9:33:10 AM at MailClient.Protocols.Common.ItemSynchronizeContext2.\<\>c__DisplayClass41.b__1(T i)
9:33:10 AM at System.Linq.Enumerable.<>c__DisplayClass212.b\_\_20(TSource item, Int32 i) 9:33:10 AM at System.Linq.Enumerable.d\_\_232.MoveNext()
9:33:10 AM at System.Collections.Generic.List1..ctor(IEnumerable1 collection)
9:33:10 AM at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source) 9:33:10 AM at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source)
9:33:10 AM at MailClient.Protocols.Common.ScheduleItemSynchronizeContext1.StoreItems(SynchronizationType type, IEnumerable1 newItems)
9:33:10 AM at MailClient.Protocols.Common.ItemSynchronizeContext2.Synchronize[T](SynchronizationType synchronizationType, IEnumerable1 items, Func2 getUniqueId, Func3 hasChanged, Func2 isDeleted, Func2 convertItem, Action2 updateItem) 9:33:10 AM at MailClient.Protocols.Gdata.CalendarItemSynchronizer.Synchronize(IItemSynchronizeContext1 synchronizeContext, Folder folder, CancellationToken cancellationToken)
9:33:10 AM at MailClient.Protocols.Common.ItemSynchronizer2.\<\>c\_\_DisplayClass2c.\<\>c\_\_DisplayClass30.b\_\_29(WorkerStatus status, CancellationToken cancellationToken) 9:33:10 AM at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status) 9:33:10 AM --- End of inner exception stack trace --- 9:33:10 AM at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status) 9:33:10 AM at MailClient.Commands.Command.Process(WorkerStatus status) 9:33:10 AM [[email protected]](http://mailto:[email protected]) [GData] Synchronizing folder '[[email protected]](http://mailto:[email protected])/[[email protected]](http://mailto:[email protected])/' 9:33:11 AM [[email protected]](http://mailto:[email protected]) [GData] Synchronizing folder '[[email protected]](http://mailto:[email protected])/[[email protected]](http://mailto:[email protected])/' 9:33:11 AM [[email protected]](http://mailto:[email protected]) [GData] Synchronizing folder '[[email protected]](http://mailto:[email protected])/Weather/' 9:33:11 AM [[email protected]](http://mailto:[email protected]) [GData] Synchronizing folder '[[email protected]](http://mailto:[email protected])/[[email protected]](http://mailto:[email protected])/' 9:33:12 AM [[email protected]](http://mailto:[email protected]) [IMAP] Synchronizing messages: Done 9:33:23 AM MailExceptions.OperationException: Synchronizing folder '[[email protected]](http://mailto:[email protected])/[[email protected]](http://mailto:[email protected])/' failed with an error: Index was out of range. Must be non-negative and less than the size of the collection. 9:33:23 AM Parameter name: index ---\> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. 9:33:23 AM Parameter name: index 9:33:23 AM at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource) 9:33:23 AM at System.ThrowHelper.ThrowArgumentOutOfRangeException() 9:33:23 AM at System.Collections.Generic.List1.get_Item(Int32 index)
9:33:23 AM at MailClient.TimeZone.TimeZoneInfo.SystemTimeToObservance(RegistryTimeZoneInformation tzi, SystemTime onset, String name, ObservanceType observanceType, Int32 startYear, Int32 endYear)
9:33:23 AM at MailClient.TimeZone.TimeZoneInfo.ParseObservances(List1 observances, RegistryTimeZoneInformation tzi, String standardName, String daylightName, Int32 startYear, Int32 endYear) 9:33:23 AM at MailClient.TimeZone.TimeZoneInfo.FromRegistryKey(String id, RegistryKey registryKey) 9:33:23 AM at MailClient.TimeZone.TimeZoneInfo.FindSystemTimeZoneById(String id) 9:33:23 AM at MailClient.Protocols.Gdata.EventConvert.ParseTimeZone(EventDateTime dateTime) 9:33:23 AM at MailClient.Protocols.Gdata.EventConvert.ConvertDateTime(EventDateTime dateTime, TimeZoneInfo& timeZone) 9:33:23 AM at MailClient.Protocols.Gdata.EventConvert.ConvertEvent(Event evnt) 9:33:23 AM at MailClient.Protocols.Gdata.CalendarItemSynchronizer.b\_\_f(Event e) 9:33:23 AM at MailClient.Protocols.Common.ItemSynchronizeContext2.<>c__DisplayClass41.b\_\_1(T i) 9:33:23 AM at System.Linq.Enumerable.\<\>c\_\_DisplayClass212.b__20(TSource item, Int32 i)
9:33:23 AM at System.Linq.Enumerable.d__232.MoveNext() 9:33:23 AM at System.Collections.Generic.List1…ctor(IEnumerable1 collection) 9:33:23 AM at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)
9:33:23 AM at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) 9:33:23 AM at MailClient.Protocols.Common.ScheduleItemSynchronizeContext1.StoreItems(SynchronizationType type, IEnumerable1 newItems) 9:33:23 AM at MailClient.Protocols.Common.ItemSynchronizeContext2.Synchronize[T](SynchronizationType synchronizationType, IEnumerable1 items, Func2 getUniqueId, Func3 hasChanged, Func2 isDeleted, Func2 convertItem, Action2 updateItem)
9:33:23 AM at MailClient.Protocols.Gdata.CalendarItemSynchronizer.Synchronize(IItemSynchronizeContext1 synchronizeContext, Folder folder, CancellationToken cancellationToken) 9:33:23 AM at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass2c.<>c__DisplayClass30.b__29(WorkerStatus status, CancellationToken cancellationToken)
9:33:23 AM at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status)
9:33:23 AM — End of inner exception stack trace —
9:33:23 AM at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status)
9:33:23 AM at MailClient.Commands.Command.Process(WorkerStatus status)
9:33:23 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Ricky&Lauren Calendar/’
9:33:26 AM MailExceptions.OperationException: Synchronizing folder ‘[email protected]/Ricky&Lauren Calendar/’ failed with an error: Index was out of range. Must be non-negative and less than the size of the collection.
9:33:26 AM Parameter name: index —> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
9:33:26 AM Parameter name: index
9:33:26 AM at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
9:33:26 AM at System.ThrowHelper.ThrowArgumentOutOfRangeException()
9:33:26 AM at System.Collections.Generic.List1.get\_Item(Int32 index) 9:33:26 AM at MailClient.TimeZone.TimeZoneInfo.SystemTimeToObservance(RegistryTimeZoneInformation tzi, SystemTime onset, String name, ObservanceType observanceType, Int32 startYear, Int32 endYear) 9:33:26 AM at MailClient.TimeZone.TimeZoneInfo.ParseObservances(List1 observances, RegistryTimeZoneInformation tzi, String standardName, String daylightName, Int32 startYear, Int32 endYear)
9:33:26 AM at MailClient.TimeZone.TimeZoneInfo.FromRegistryKey(String id, RegistryKey registryKey)
9:33:26 AM at MailClient.TimeZone.TimeZoneInfo.FindSystemTimeZoneById(String id)
9:33:26 AM at MailClient.Protocols.Gdata.EventConvert.ParseTimeZone(EventDateTime dateTime)
9:33:26 AM at MailClient.Protocols.Gdata.EventConvert.ConvertDateTime(EventDateTime dateTime, TimeZoneInfo& timeZone)
9:33:26 AM at MailClient.Protocols.Gdata.EventConvert.ConvertEvent(Event evnt)
9:33:26 AM at MailClient.Protocols.Gdata.CalendarItemSynchronizer.b__f(Event e)
9:33:26 AM at MailClient.Protocols.Common.ItemSynchronizeContext2.\<\>c__DisplayClass41.b__1(T i)
9:33:26 AM at System.Linq.Enumerable.<>c__DisplayClass212.b\_\_20(TSource item, Int32 i) 9:33:26 AM at System.Linq.Enumerable.d\_\_232.MoveNext()
9:33:26 AM at System.Collections.Generic.List1..ctor(IEnumerable1 collection)
9:33:26 AM at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source) 9:33:26 AM at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source)
9:33:26 AM at MailClient.Protocols.Common.ScheduleItemSynchronizeContext1.StoreItems(SynchronizationType type, IEnumerable1 newItems)
9:33:26 AM at MailClient.Protocols.Common.ItemSynchronizeContext2.Synchronize[T](SynchronizationType synchronizationType, IEnumerable1 items, Func2 getUniqueId, Func3 hasChanged, Func2 isDeleted, Func2 convertItem, Action2 updateItem) 9:33:26 AM at MailClient.Protocols.Gdata.CalendarItemSynchronizer.Synchronize(IItemSynchronizeContext1 synchronizeContext, Folder folder, CancellationToken cancellationToken)
9:33:26 AM at MailClient.Protocols.Common.ItemSynchronizer`2.<>c__DisplayClass2c.<>c__DisplayClass30.b__29(WorkerStatus status, CancellationToken cancellationToken)
9:33:26 AM at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status)
9:33:26 AM — End of inner exception stack trace —
9:33:26 AM at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status)
9:33:26 AM at MailClient.Commands.Command.Process(WorkerStatus status)
9:33:26 AM [email protected] [GData] Synchronizing folder ‘[email protected]/[email protected]/’
9:33:26 AM [email protected] [GData] Synchronizing folder ‘[email protected]/[email protected]/’
9:33:27 AM [email protected] [GData] Synchronizing folder ‘[email protected]/United States/’
9:33:27 AM [email protected] [GData] Synchronizing folder ‘[email protected]/Accra/’

Hi,
any news about this issue?
Thanks,
Ricky

Hi,
please contact me at [email protected] - I will send you further instructions. Thank you.