https://bugs.winehq.org/show_bug.cgi?id=43670
--- Comment #2 from Fabian Maurer dark.shadow4@web.de --- On win10 the same thing happens when it doesn't find mspaint.exe.mui, e.g. by deleting that file. But on win7 it works even when that file is missing. Might be related, but not sure.
Anyone else has some insights?