tutorial error or reinit.c error

[omega]

i am not sure how this is possible i tried to follow instruction of manual i am sure its not a problem with manual but there is some strange thing with doing anything with reinit.c if i open the file and do exactly nothing and save it (ofcource using notpad) i can open the game anymore
its very strange becuase error says "COMPILE ERROR - file: Reinit.c; line: 526
Duplicate variable name: j"
lol just saving the create a duplicate variable name :| anyway to prevent this?