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• @dstillman: My original step was to replace 5.0.78 with 5.0.79 beta and that did not help. I have two folders in Program Files (x86): Zotero (currently active) and Zotero Standalone (probably from an earlier installation of 4.x). I tried reverting…

  in Zotero Standalone won't open - Database upgrade error Comment by aborisen December 3, 2019
• I was not able to sync anything initially because Zotero would not get me past the error message on the other computer. I tried copying the 'old' zotero.sqlite file from the computer where I had it working properly and that did not help. But when I …

  in Zotero Standalone won't open - Database upgrade error Comment by aborisen December 2, 2019
• Thank you - that solved it. For your reference, the ID is 5de577a0ebe05 Still a bit strange that the old (corrupt?) DB file works fine on one computer, but not the other. Hopefully, the above info could provide insights... Anyway, everything works f…

  in Zotero Standalone won't open - Database upgrade error Comment by aborisen December 2, 2019
• Thanks a lot for the speedy reply! I tried running once and then overwriting the current installation, but now I get a different message: ========= There was an error starting Zotero. Error: Invalid field 'accessDate _fieldCheck@chrome://zotero…

  in Zotero Standalone won't open - Database upgrade error Comment by aborisen December 2, 2019