Try adding

use lib ".";
[download]

I don't think, however, that placing your modules in an executable directory is a good thing. Especially if there is actual login information in those modules. Often, since a .pm file will not have a proper MIME type entered for the webserver, your webserver will allow users to pull down the code as text. I would find a different directory to place your libraries outside of the webserver root so they are more secure.