I do find this script useful but it seems to fail on a pretty regular basis. Perhaps it's a problem on my end so let's start with that.
I routinely get a Windows exception error stating:
AppName: calibre-parallel.exe AppVer: 0.8.13.0 ModName: unknown
ModVer: 0.0.0.0 Offset: 025b80b5
Once I see that message I know I'm done and I might as well kill the job. I have let it sit for over an hour and it never will finish. The real kicker is, unless I'm missing something, the ISBNs it did find aren't applied if you have to kill the job. Scanning 500 books and finding out it crashed at 98% just makes my skin crawl.
My question is, what, if anything, can I provide to help find and squash whatever is causing this?