CB 1.9 / Joomla 2.5.14 / SEO on - User profile edit leads to blank page

Hello, I'm running CB 1.9 with Joomla 2.5.14.
When Joomla SEO settings are ON, the Link to "User profile edit" does not work, it leads to a blank page. When SEO is OFF, the form shows up correct.
I don't have any clue why this is happening. There is no hint in apache log, the profile edit page just doesn't show up.

Of course I don't want to shut off SEO, so for now I switched back to the standard Joomla profile edit page, which is working.

Anybody experiences similar behaviour? Any suggestions on what I can do to solve this problem?

please, can somebody give me a hint where to investigate.

dave05er wrote: please, can somebody give me a hint where to investigate.

no idea - please turn on Joomla debug to maximum level and see if more info shows up on blank page.

hmmmmm.... okay.... :huh:
after I activated debug mode, the profile edit site comes up again...
no idea what happened, but it works again now.

thank you for your reply!