[Burt Adsit]

From the forums installation-readme.txt:

11. Enable user switching in bbPress by copying the following line of code into your bbPress

bb-config.php file:

$bb->bb_xmlrpc_allow_user_switching = true;

Needs to be in your bb-config.php

A helpful topic here: https://buddypress.org/forums/topic.php?id=471