Keeps punting?

[Suntzu-AOW-]

First i would like to say that i love the site an all the info..!!!!plus the LARGE selection of maps is just too cool.probaly the largest selesction i have seen..im not the best mapmaker or nothing like that but i have alot of fun makeing maps an trying to think of real life situations for maps!!!!! i am haveing a problem with 1 of my maps it keeps punting people when they join the server...every1 its not discrimante...an i have went thru an took out every vehicle an all things i thought could be the problem an it still punts...its a flat map an its got nothing but buildings an thats about it now...victory an lose conditons are set to null...if ne of the Map GODS have the awnser please please help this new player an map maker on the right path...lol thanks again.4 your time