A couple of cases where I'm unable to see a member's page. @katpiercemusic as an example yilds this error message.
Fatal error: [] operator not supported for strings in /home/fawmerso/public_html/fiftyninety/includes/common.inc on line 2530
There were a couple of others, cant' remember who. I can find other peopel without issue.
Same with http://fiftyninety.fawmers.org/user/kahlo2013
There's also another thread about it
http://fiftyninety.fawmers.org/content/fatal-error-when-trying-access-profile-page
What's common to all your profiles is that you all have a song where you have yourself marked as a collaborator. My guess is, that's the culprit.
Btw. I can open kat's profile just fine, but not kahlo's.