eM Client is the best and I love it however I have a small problem which is becoming annoying. I have gmail account, one for work and the other for home. My personal gmail address when syncing with the calendar I get the following message. "Synchronizing Calendar ""Personal Account/Personal/failed with an error: String was not recognized as a valid Date Time
send me your GData logs please. Go to: Tools - Settings - Logging, check GData under the problematic account and wait until the error message shows again. Then send me the log using the same logging settings window.
Do not forget to change the recipient to email@example.com