Hi,
Have been using RC 6.5 3693 on Vista running 24x7 with no problems until last week.
Now X1 opens, shows user interface, says loading index, then shuts down the UI immediately. An error dialog box opens and says "Value cannot be Null" and either e1 or el. The error dialog displays for less than a second and then disappears, the whole opening of X1, closing of UI, flash/display of error message takes less than 5 seconds.
I have uninstalled and reinstalled. After fresh reinstall, X1 works fine for a while - I believe while it is creating the new index. After an overnight, X1 then misbehaves, it opens and shuts down. Reboot, X1 still opens and shuts down immediately. Can only get it to work again by reinstall (blowing away index)
Only changes to system were Microsoft update to .Net 3.5 latest patch last week.
Any log files I can look at? Any other suggestions?