Just using the secondary grouped library (first by new field license, then by type) opening/closing a group of reources will crash Logos

Error ID: 7021 / 4261
Error detail: ArgumentException: Width and Height must be non-negative.
This is repeatable (since the grouped library comes up at restart). Note: in the repeat crash, detection was still running, therefore the yellow info bar - in the first crash, not so. I include the beta install log in the first zip and the event log entries (third zip, German and English) as it seems to crash .NET
2541.6.4 beta 5.crash.zip
5287.6.4 beta 5 crash repeat.zip
2867.crash 6.4 beta 5.zip