Information modified both on remote server and locally

I’m trying to manage my Google contacts list using eM Client.  I removed a group of contacts from a category and have been getting the error, “Failed to upload contact “X”.  The contact was modified both on the remote server and locally…”.  

I wasn’t actively modifying the remote Google account data, though.  Why is eM client getting confused, and is there any work-around?

You could remove the account from eM Client, than add it again. See if that makes any difference.