I had the same problem when I first installed... I don't remember why the problem exists, but I removed the line calling the uninstall file from the XML install file, did the install, put the file where it belongs manually, and then added it back to the XML file...
I think it was something silly like the path was wrong...
1 4M N0T 4 G33K!
1 4M N0T 4 G33K!
1 4M N0T 4 G33K!
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0K 1 4M