Since loading Lightroom 6, I have found that when exiting Lightroom it does not exit cleanly. I get a message that it has stop just after it seems to finish backing up. WIndows asks if I want to close program. In the event log I get this error message:
Level Date and Time Source Event ID Task Category
Error 5/21/2015 3:20:14 PM Application Error 1000 (100) "Faulting application name: lightroom.exe, version: 220.127.116.11, time stamp: 0x553af4c6
Faulting module name: ntdll.dll, version: 6.1.7601.18839, time stamp: 0x553e8bfa
Exception code: 0xc0000374
Fault offset: 0x00000000000bfc22
Faulting process id: 0xc8c
Faulting application start time: 0x01d0940bf686f236
Faulting application path: C:\Program Files\Adobe\Adobe Lightroom\lightroom.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 8d36580c-0007-11e5-bbee-d43d7ed7e197"
I am running windows 7 pro, 32 GB ram, 2- 2TB 7200 internal drives with one dedicated to data only... ADM Radeon HD 7800 Graphics card.
This error does not occur every time... maybe 1 out 5 times.. based on error is there any indication as to where I might look for a problem or does Lightroom have an issue??
Make sure you have the LR6.0.1 update installed:
If that doesn't resolve the issue I would uninstalling LR6 and then a reinstall. Your LR catalog and all other user properties will not be removed.
See other repair suggestions here: