Checking pspad.ini I just found some strange values... Don't know how they made it into the ini file, I did not edit them. Looks like uninitialized values to me.
Excerpt: GutterBackColor=-2147483633 GutterFontColor=-16777208 MultiBackColor=-16777201 MultiForeColor=-16777208 -- <https://forum.pspad.com/read.php?4,73692,73980> PSPad freeware editor https://www.pspad.com
