Basically 100% bet that you're talking about Bug 799668 This has been discussed in this forum extensively.
For example, last week on August 25: https://lists.gnucash.org/pipermail/gnucash-user/2026-August/121563.html There are many other messages here, but the solutions are all basically the same: Delete the GnuCash directory. Always, always backup any and all important data. Search "1-2-3 backup strategy" for some information about how to maintain backups. The GnuCash documentation/wiki also has information about how to backup your GnuCash files. > On 09/04/2026 9:39 AM PDT Robert Jungkind <[email protected]> wrote: > > > Recently I noticed that I was running 5.8 and the latest version is 5.16. > Installed 5.16 and got the attached message. > Reinstalled the old version and everything ok. > > To find out where the problem starts, I started to install step by step, from > 5.8 to 5.9, then to 5.10 and so on. > > After installing 5.12 the same happened, the new version did not open and the > same message. > > Is this a known flaw? Where can I find information how to overcome it? > > Thanks > > Robert > > _______________________________________________ gnucash-user mailing list [email protected] To update your subscription preferences or to unsubscribe: https://lists.gnucash.org/mailman/listinfo/gnucash-user ----- Please remember to CC this list on all your replies. You can do this by using Reply-To-List or Reply-All.
