DTPro constantly crashing when opening mail folder

Hello Community,
Today I realized a problem with the folder were my mails form Apple mail are imported via the DT plug-in for Apple mail. When I try to open this folder DT crashes. Any hints what I can do?

Greetings

Mike

Please choose Help > Report Bug while pressing the Alt modifier key and send the result to cgrunenberg - at - devon-technologies.com - thanks!