After upgrading to 6.3.0.17, sporadic access violation using Quick Search

[kinook]

I put the previous version for download at

https://kinook.com/Download/Old/Ultr...l_6.3.0.16.exe

in case it avoids the issue, and if so, it would also narrow down which changes could have caused it. I checked all recent changes and nothing stands out as introducing the problem.