Upon upgrading to 7.5 Beta 1, Logos would not start. The splash screen would be displayed for approximately 3 seconds, then execution terminated. I reinstalled the stable release and there was no problem. Upon upgrading to 7.5 Beta 2, the issue reappeared.
Logos log file could not be created, however, the windows event viewer logs indicated a .NET problem. I attached the windows event logs and a system summary report5040.WEL_System_Logos_Crash.zip.
Thanks.