Filing a bug report and using module v0.05 is probably your best action. However, you can also hack a solution:

use LWP::Curl;
require HTML::Entities;
BEGIN { *LWP::Curl::encode = \&HTML::Entities::encode; }
[download]

Or you can translate your code to one of the more commonly used LWP modules like LWP::Simple or LWP::UserAgent.

.02

Update: Nevermind, looks like the module author watches perlmonks ;)