I am still unable to successfully get invitations working. Everything works just fine, but users will still "ignore" when clicking the confirm button. Where exactly do we set the "invite action url"? Is that on facebook? I see a "post invite acton url" in your module parameters, but from reading the documentation on facebook, it looks like this is the place the the inviter is sent to after inviting a user (like back to the invite page to invite more, or to a thanks page, etc.).
Nevermind, while writing this I decided to do some testing and found the solution.
The way to fix my problem is to add the url I want to direct facebook invitees to upon confirming my application to the "invite content url" field of the module parameters. Perhaps a simple update to the tooltip for this parameter would prevent this issue for other users (unless it was only me <!-- s:oops: --><img src="{SMILIES_PATH}/icon_redface.gif" alt="
" title="Embarrassed" /><!-- s:oops: --> ). Please consider changing it.
Currently it states : "this is the url that is used for the button in the invite content", which I thought was for adding your own button/logo for confirming the invitation, like "/images/websitelogo.png".
Perhaps is should state: "this is where invitees are directed from facebook when they confirm invitations", which is harder to confuse.
Sorry for being thick, and thanks for the help.