Was playing it and trying to figure out how to play, lost the first level and did Retry, then clicked at the top-most gate (still the first level) and got a crash:
Sorry, should've updated the main description. See Bug Fix #2--extract to the same folder as the original--yes, replace. (I was very rushed for time at the end, and this got through making it kinda unplayable as Solids without the fix.)