Yes. Delete the Perl key. All Win32 Perls questionable (IMHO) check their registry key for what normally are shell enviromental variables. Your Strawberry Perl is trying to load parts of ActivePerl into itself and vice versa. Do a "perl -V" at console and check what is for @INC at the bottom of the console message. The folders must be only refer to only 1 install/version of Perl.