Thank you; I will try the new version when I'm back home (apologies for the slow reply, I'm now on a dive trip) which will be in a couple of weeks; sorry. I -did- read the issue 429; as I said, there was not a single space anywhere in any of my partition or other labels, which seems to have been the root cause of that issue. Again, if spaces cause problems, simply replacing them with an underscore or a "%20;" html escape sequence or whatever would fix them causing problems in whiptail or other dependencies....
FWIW, I confirm that Clonezilla Live CD 3.1.2.9 works fine.
"Box" is an unknown partition device. Program terminated..
Ah, interesting that it's maybe only related to OCR... and yes, I scan all my documents with OCR enabled, even though mostly it fails due to a lot of my documents being in japanese these days.. I did reset various settings etc, but still the only way to manage to finally get the document I had trouble with scanned in was by driving the UI "blind". As you say, it's difficult to reproduce reliably in general (except with that one document), but the fact that other software packages log the same error...
So I did some more digging, and it appears that this error might be related to specific versions of libfreetype and/or the saved settings in my user account. I will try deleting caches etc and see if I can repro. But might be good to keep it in the knowledgebase regardless.
GUI goes blank - error occurred in libfreetype
Also, from http://www.fox-toolkit.org/timers.html: Repeatedly resetting the chore...
Ok, had a quick look at the source code, and basically it seems that "delete this"...