id down load the pack again and copy the file again.
if youve touched the file it migth do that.
designing the levels has been a bit tricky at times as there no debug, and if i got something wrong in file, missing comma, non consistant data it would just kill the game

but my level 5is ok actually file Level88.lua
so cd in pack2 dir and type

md5sum Level88.lua

if you dont get abfb327f6......57fd (there more in middle but tricky to type it all :-}) then you definitly done have the same file. If you do have the same number then im stummped