Hmm, the only way I can get perl 5.10.0 now is via the absolute path "/usr/bin/perl5.10.0" , as "/usr/bin/perl -v" says its 5.8.9. "perldoc File::Basename" gives me something similar to a manpage, but is that from the 5.8.9 version on my system? I saw no 5.10.0 path for perldoc on my system. Anyways, I get this error now: