In contacts, when copying data with one or more periods "." in it, the client shuts down.

NULL

Hi,
do you get any error messages? If so, could you post here a screenshot please?

Captured error logic:

eM Client (5.0.18025.0)
Windows: Microsoft Windows NT 6.1.7601 Service Pack 1, Framework: 2.0.50727.5466
The following error has occurred:
System.Data.SQLite.SQLiteException: SQLite error
no such column: suffix
at System.Data.SQLite.SQLite3.Prepare(SQLiteConnection cnn, String strSql, SQLiteStatement previous, UInt32 timeoutMS, String& strRemain)
at System.Data.SQLite.SQLiteCommand.BuildNextCommand()
at System.Data.SQLite.SQLiteCommand.GetStatement(Int32 index)
at System.Data.SQLite.SQLiteDataReader.NextResult()
at System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)
at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SQLite.SQLiteCommand.ExecuteNonQuery()
at MailClient.Storage.Data.SQLite.DbContactRepository.Update(IEnumerable1 contactItems, IEnumerable1 propertyNames)
at MailClient.Storage.Data.SQLite.DbRepository1.Modify[ST](Object senderContext, IEnumerable1 items, IEnumerable1 propertyNames) at MailClient.Storage.Data.SQLite.DbContactRepository.Modify[ST](Object senderContext, IEnumerable1 items, IEnumerable1 propertyNames) at MailClient.RepositoryExtensions.Modify[T,ST](IRepository1 repository, IEnumerable1 items, IEnumerable1 propertyNames)
at MailClient.Storage.Application.Item2.Modify(ItemUpdateAction action) at MailClient.Storage.Application.Categories.CategorizableItem2.Modify(ItemUpdateAction action)
at MailClient.Storage.Application.Contact.ContactItem.Modify(ItemUpdateAction action)
at MailClient.Storage.Application.Item`2.EndUpdate()
at MailClient.UI.Forms.formContact.saveDataToContact()
at MailClient.UI.Forms.formContact.buttonSave_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)

Hello. Please try to download and install a newer version from here: http://www.emclient.com/dist/v5.0.180…
It should fix the problem