LOL @ being paid. I havent heard nothing about that. In your situation, it just validates my example above. Here the module worked on their test site, but not yours. Since you stated that you installed the module on a 'clean' install of Dolphin, there shouldn't be any type of conflict with other modules. You indicated that his change was to your core files which messed up your site. You would need to explain what file he/she changed (need proof positive), how it affected your site, etc. It would see more also need to be examined to see if the install 'required' modification to core files in order to work.

All in all, we (Moderators) will have a big task on our hands trying to get these disputes resolved.
My head hurts for you.............
to resolved this issue and probably also for other cases
there would need sites in each version of dolphin - for testing the modules in dispute - tested by moderators or SuperModerators
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.