Basecamp 4.2.1 crashes when sending data to Device (BMW Navigator IV)

Basecamp 4.2.1 crashes when sending routes or any data to the device in my case a BMW Navigator IV.
Pretty unreliable and so far I havent been able to send anything to my device. However reading from the device works. I could get the log files.

Anyhow, Garmin support issue.

Goofer311 about Garmin BaseCamp