desynchronisation and mac user ?

i have read somewhere but can't find now that some things can make a desynchronisation between a mac and a windows user.

Could you tell me more about this plz ?

Not returning a boolean when the function should return one for a condition is one. The native to damage area is another.

it's seems to crash games. on MAC's

http://wc3campaigns.net/showthread.php?t=100090 - read the last posts (there's an example of potential crash on Mac).

and not the gui function UnitDamagePointLoc ?

i ask that because it's not so obvious this function must return a boolean, and you talked about that