Error Uploading item to folder -

Error Uploading item to folder - gives my email account which looks absolutely correct. then it goes on to state “failed due to the following error: The added or subtracted value results in an un-representable DateTime. Parameter name:t” I really have no clue what this means or how to correct this. Anyone know about this and how to fix? Many thanks!

Looks like I found the answer (I hope) when the related conversations came up. 

Hello, please try to update your eM Client to this release, 6.0.23330.0 and check if the issue persists. If it does, it may have to be necessary to repair the calendar folder eM client is having issues with (mentioned in the error), right click the folder in the left pane and select Properties > Repair in order to perform the repair and re-synchronise the folder with the server.