If you are running Mac OS X 10.3.9, could you please run on over to http://www.bingocardcreator.com, download the free trial, and see if you are able to run it?  A user of mine is reporting a quirky Java error on that operating system but not on another OS X 10.4 box they have access to, and I’m trying to isolate whether it is their machine that has the issue or whether Bingo Card Creator has a hidden incompatibility with something on a particular version of OS X.