I discovered this while working on my arbitrary precision calculator. When I was done with it, I shared it and tinkered with it to check if it was working. However, it didn't save properly which ended up causing save data corruption. The corrupted file dates back April 18 2026, 7:01 PM. My best theory is that it happened while I was running a stress test to find Mersenne primes. (If you are curious I'm searching if M146131823 is prime, it expects to end schedule on July 20 2026). Don't worry its fixed now!