[Aneox]

When bbpress and mingle active in one time, forum access deny(error 404) for Participants and Moderators. Keymaster and Spectators works well. It doesnt depend on the theme.

Ive done a lot of work to customize mingle for my WP. But now i need a forum. Please help.
WP 3.5, mingle and bbpress latest versions.

[Aneox]

Users with bbpress role=Participants and WP role=Admin works well too.

[Stephen Edgar]

Are you referring to Mingle Forums?

If so I could not repro this with bbPress 2.2.3 and Mingle Forums 1.0.33.3

• WordPress Role = Administrator | bbPress Role = Keymaster
• WordPress Role = Subscriber | bbPress Role = Moderator
• WordPress Role = Subscriber | bbPress Role = Participant
• WordPress Role = Subscriber | bbPress Role = Spectator

The above was all I tested but each works as expected:
https://codex.bbpress.org/bbpress-user-roles-and-capabilities/

[Aneox]

No, iam using mingle social network plugin

[Stephen Edgar]

You didn’t state the full plugin name 😉

bbPress tries to be as compatible as it can with as many WordPress plugins as possible and I suggest you post in the Mingle Support Forum to see if any others have had the same issue and/or know of a work around. https://wordpress.org/support/plugin/mingle

[Aneox]

https://wordpress.org/extend/plugins/mingle/

Wp Mingle. In theory, there are no possible conflicts with bbpress.