I upgraded to build 597 today and had all my settings reverted to default PSPad values after first startup of PSPad. Luckily I had a backup of my original PSPad.INI settings file, once applying the backup file and restarting PSPad everything was back to normal.
In addition to that I have display issues with the tab bar since the last build, the tab headers sometimes vanish until I mouse-over them. Also I can't see all open tabs anymore as only one line of tabs is displayed (earlier builds had the tab area resize to multiple lines in case there were more tabs open than could be displayed in one line). -- <https://forum.pspad.com/read.php?6,75339,75372> PSPad freeware editor https://www.pspad.com