@MMW you are a lifesaver. @BLUEFROG FYI–I had exact same problem.
deleting ~/Library/Application Support/ABBYY/SDK did the trick. I followed this thread from the very top, trying each suggestion in order–doh! After trying all the recommendations in order to include de-activating my license and so on, I finally got down to the SDK folder recommendation. Deleting that worked. OCR functioning normal again.
I licensed the software about a week ago, after trialing it for three days. I’ve been testing the OCR feature extensively with some scanned PDF files in batches since then.
The procedure suggested by @aedwards successfully resolved the initial issue.
Later on after resuming the scanning, the process got stuck ‘Adding Document’ for more than an hour and I had start all over from the first unprocessed file.
This is still an issue. I get about 20 large pdfs OCR’d then the error reappears and it quits OCR’ing… Even after the workaround, the license error still returns in 3.6.3
Abbyy still has not fixed this issue. 3.7 gives the error after 24 pdfs or so… I am ocr’ing about 1000 pdfs of 100+ pages and it has taken me weeks of finding my process error’d out, quitting DT, restarting the app and the OCR process again. I would have loved to just start OCR’ing and forget about it until it’s done… I know it’s not DevonTech’s fault, but it is really frustrating.