When I exit GNUCash on Windows 10, column width and tree state data is not saved anymore. I've opened the trace file which revealed that the process is unable to save to the temporary directory. After I've manually created all the referenced directories in C:\Users\belidzs\AppData\Local\Temp\ and restarted the software the state files were created again and the issue went away. I think these files shouldn't be saved in the temp anyway, so there must be a bug when choosing this directory instead of C:\Users\belidzs\AppData\Roaming\gnucash * 12:22:57 CRIT <gnc.app-utils> [gnc_state_save()] Error: Cannot open state file C:\Users\belidzs\AppData\Local\Temp\belidzs\GnuCash\books\fokonyv.gnucash.gcm: No such file or directory * 12:22:57 CRIT <gnc.core-utils> Cannot open file C:\Users\belidzs\AppData\Local\Temp\belidzs\GnuCash\expressions-2.0: No such file or directory * 12:22:57 WARN <gnc.scm> Can't save style sheet