How to Downgrade GBrowse

Hello,

Is there any way to safely downgrade GBrowse? I have GBrowse installed,
version 1.993, but it is not working well (not showing "overview"
neither "Details", plus errors like "The landmark named
chrI:80,000..120,000 is not recognized. See the help pages for
suggestions" just after installation), so I want to perform a GBrowse
downgrade (to version 1.69, the one I understand is more stable). Could
anyone tell me how to do this?

Basically, I want to know how to UNINSTALL GBrowse :) which I installed
with CPAN (as far as I know, cpan does not have an "uninstall"
instruction).

Thanks!