fails enabling IdeaTorrent module

install works fine until i try to enable the IdeaTorrent module. It emits several errors, the first of which is
===start of error msg======
Location http://eavm4:8081/ideas/admin/build/modules/list/confirm
Referrer http://eavm4:8081/ideas/admin/build/modules
Message pg_query() [<a href='function.pg-query'>function.pg-query</a>]: Query failed: ERROR: relation &quot;qapoll_poll&quot; already exists in C:\Program Files\BitNami WAPPStack\apache2\htdocs\ideas\includes\database.pgsql.inc on line 126.
Severity error
===end of error msg======
I've tried the install on a linux lapp server as well and had same issue

Here is the environment i'm trying to install ideatorrent into:
===start of status report===
Drupal 5.19
Configuration file Protected
Cron maintenance tasks Last run 1 week 3 days ago
You can run cron manually.
Database schema Up to date
File system Writable (public download method)
GD library bundled (2.0.34 compatible)
PHP 5.2.10
PHP register globals Disabled
PostgreSQL database 8.3.5
Unicode library PHP Mbstring Extension
Web server Apache/2.2.11 (Win32) PHP/5.2.10
===end of status report===

thanks