Did you upgrade to 2.4.9 on Windows? It's a known issue. The workaround is to uninstall GnuCash and reinstall it. Alternatively 2.4.10 is imminent which I think has fixed this. -- View this message in context: http://gnucash.1415818.n4.nabble.com/Error-when-launching-tp4334577p4334594.html Sent from the GnuCash - User mailing list archive at Nabble.com.