I got ahold of the developer of the Transposh plugin. He noted an error in the script for register.php. Here is his response. I followed his instruction and it works again! This is a very impressive plugin! You can do this quick fix until the next buddypress update if you want his plugin!
From Transposh developer:
Found the bug in the buddypress theme
look at the file
wp-content/plugins/buddypress/bp-themes/bp-default/registration/register.php
Search for “Complete Sign Up”
See the missing space between the type and the name – add one!
Also reported upstream: https://trac.buddypress.org/ticket/2516
