@brunopark: have you checked it more than once in a row? fpsc is not the most stable builder. could be final game crashes now, and 5 minutes later the same build works like a charm. try to rebuild. as far as i see, fpsc renders no buildgame as the other. always missing something. one time a complete folder, next time only some sounds, another time some scripts... never as intended, but sometimes its enough to get it working^^
thats why i render testgame every 15 minutes and a complete buildgame at the end of a development day (and also between) and test it completley. then you know what you have done today and can search the errors on point without rebuilding the whole levels from the beginning... and doing same faults again.
consumes time and gets boring after doing it 50 times, but helps to not get insane.
some errors in any scripts used, problem with custom media in relevance to some other things near on the map, animation-glitches, wrong setup variables...or simply a calculation error.