OP used PPM, prerequsites are installed via PPM. Why have you scripted a cpan install when running cpan Wiktionary::Parser from the command line will do the same thing?

Also note that OP said he was on Windows 7 64 bit, if they're using 64 bit ActiveState Perl no C compiler or build tools are installed by default, and aren't available on the 64bit platform from PPM. So without them manualling installing all this your suggestion of a cpan installation may fail.

Update: Added link. Slight rewording for clarity