Day amp arrives Cashier check returned

Today an amp I shipped across the country arrived safely at it's destination. Oddly enogh while I was at the bank today I was informed that a rather large cashier's check did not clear.

I called the guy up and he answered the phone (good sign) He say's he does not understand what could have happened and will check in to it first thing in the mourning.

My bank say's he may have stopped payment on the cashiers check. They could not give me any other details. Just that I would be recieving the check back in the mail in a few day's

Does this kind of stuff ever turn out good? Or am I screwed?

I will follow up tomorrow.