my winrar zip file wont upload to gmod.org

ok so i made my very first map and i want to upload it to gmod.org and when i try to upload it it wont work it freezes and gets stuck i know its a winrar compressed zip file and i dout its to big so can any of u guys help if u can plz do so by leaving helpful comments thanks.

Already being discussed in this thread: http://www.facepunch.com/showthread.php?t=887575

o sry i didnt know my bad