Random compiler error

I’m trying to compile some lovely code and I get this error at time…

i686-apple-darwin8-g+±4.0.1: /Users/brun/root/lib/libCore.dylib: No such file or directory
i686-apple-darwin8-g+±4.0.1: /Users/brun/root/lib/libCint.dylib: No such file or directory
i686-apple-darwin8-g+±4.0.1: /Users/brun/root/lib/libRint.dylib: No such file or directory
*** Interpreter error recovered ***

Yes, it does print it 3 times. I can quit and restart root and it may or may not pop up again. What does this error even mean? I have no idea how to start debugging this.

NK