I too am having difficulty compiling. Here is what I get when I run compile.bat:

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D:\LimeWire\Build\limewire\core>
D:\LimeWire\Build\limewire\core>set CLASSPATH=.;../gui/lib/collections.jar;../gui/lib/xerces.jar;../gui/lib/MRJToolkitStubs.jar

D:\LimeWire\Build\limewire\core>
D:\LimeWire\Build\limewire\core>d:\ant\bin\ant
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Out of environment space
Bad command or file name
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Any Ideas?