Thanks for the feedback, we're fixing the issue in the next update.
There's still a softlock if you have _negative_ money, which you can only do by cashing out a negative ticket - easiest fix is probably to just set any negative value tickets to zero.
When you have negative money, you should go bankrupt and get a phone call. Is that not working?
This was a weird edge case, it's fixed in 0.5!
