I just get 500 error. In the apache logs I get this message:

[Tue Mar 05 18:39:54 2013] [error] [client 88.13.47.98] PHP Fatal error:  Cannot redeclare user_reference_field_schema() (previously declared in /home/telelux0/www/sites/all/modules/references/user_reference/user_reference.module:52) in /home/telelux0/www/sites/all/modules/references/user_reference/user_reference.install on line 29

I can not update database nor run cron...

How can I trace this.?

Comments

I just ran into this same problem. I was able to access my site, but attempting to load any of the administration pages gave me a 500 error. I was able to resolve it by deleting the install files:

/sites/all/modules/references/user_reference/user_reference.install
/sites/all/modules/references/user_reference/node_reference.install

Obviously not ideal, but it will get you to the point where you can get your admin pages back and start dealing with things from there.

looks that hook_field_schema is declared twice.
removing the install file worked for me too.

Assigned:Unassigned» Alex Andrascu

Removing the install file worked for me too.