I'll be back tomorrow, sometime in the evening most likely, sounds like your chars may have exceeded like 2.4 billion credits? That's about the max money you can have, the integer used in the code is the biggest, holds values from like -2.4 billion to +2.4 billion, once you surpass the max, it resets back to the lowest value. I'll look at your chars when i get back to my comp (on my phone right now), and hammer out the issue, sounds simple enough to fix, probably also give the server and my comp a reboot for good measure as it's been going non-stop the past couple weeks.
See ya all soon,
-X