After running BatchPreprocessing, almost every single time, when I exit the script, PixInsight sits there 100% unresponsive for a good 1-2 minutes.
This is with the latest 1.8 updates under Win7x64.
No error message, as again, the software just becomes unresponsive for a while, then it works again "as usual", but it's certainly not normal and a bit annoying.