Thanks for replying. I posted this on the main site forum at wp-united.com as well.
When WP eMember and WP United are activated at the same time (regardless of the sequence) the following error is generated instantly:
Fatal error: Call to undefined method Emember_Auth::acl_get() in C:\inetpub\vhosts\rikupgrade.com\httpdocs\wp-content\plugins\wp-united\phpbb.php on line 317
If I deactivate WP United's member login sync between phpBB and WP, then the site is restored, except for the forum page. The forum page then displays this error:
Fatal error: Call to undefined method Emember_Auth::acl() in C:\inetpub\vhosts\rikupgrade.com\httpdocs\forum\index.php on line 25
WP eMember has its own login sync options, similar to United. That is you can toggle the option to create and login to WP using eMember. I've tried this with those activated and deactivated and the result is the same. It looks as if eMember is trying to bypass the WP login sync altogether and authenticate directly w/ phpBB. That's OK w/ me, I just need to determine how to make that plugin authenticate to the other database for login, then pass the variables back for the login/member info widget. So the three systems (WP, eMember and United) do not authenticate in sequence - both eMember and United authenticate directly to phpBB.
I don't need phpBB members to post to WP. I just need them to purchase their membership via eMember, then login with simultaneous login to the forum and access to other protected content.
I have this same question on eMember's board and I'll see if I can get their input as well.