Windows xp x64 ant compiler?

Im using a 64bit os and I don't think the ant compiler is compatible with 64bit.

what are my alternatives?

manual compiling ^^ duh

or maybee over eclipse, at least for me it seems to work(just kill all ant stuff out). Oh just to make sure, you are not trying to compile jme as a 64 bit application or?  (There is no gain, except for the higher allowed ram useage, since jmes datatypes are absolutly float (32 bit) based)

I am using Windows 7 64 bit and ant through netbeans works fine.

Are you running the 32-bit or 64-bit JDK?  I can assure it works with 32-bit JDK6