[FIXED]
I'm not entirely sure how I solved this problem. The Ubercart guys directed me to this post and I used some of the information from it. I installed drush and fiddled with the modules and it eventually worked again. My apologies that I can't provide a more detailed response, but I hope that the link above might give a shove in the right direction if anyone else has this problem.

Hi guys,

I recently installed the UberCart and Rules modules on a site that I have been designing. After copying the modules over to the server, I activated four core modules for UberCart plus an Optional Paypal module that's included with UberCart. I clicked "Save Configuration." A notice pops up saying that it needs to enable some modules (like Rules) for the Paypal module and I click okay. From that point forward, all I get are 500 errors in my Drupal Directory.

I have removed the Rules and UberCart modules from the server.
I have returned the Modules to the server.
I have disabled the modules via MySQL and cleared the cache.
I have re-enabled the modules via MySQL.
I have increased the PHP memory Limit to 300 MB.
I have restarted Apache.

None of this has worked. I can access update.php and it lists a number of "Notices," but it says that there is nothing to upgrade.

Any thoughts guys? I really would prefer not to lose my recent labor on this site because of a module install.

Comments

juankvillegas’s picture

Try to go to any page, then go to update.php and there must be the error from the previous page. Copy it here.

ipndrmath’s picture

If I go to index.php, I receive the following error:

HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.

For some reason (I haven't done anything since posting), update.php no longer lists any Notices. It just shows the regular page with no errors.

Thank you for your assistance.

ipndrmath’s picture

And now I am getting Notices on the update.php page. I don't know why it is so fickle, but I get these errors after visiting admin/build/modules.

Notice: Undefined index: access in _menu_link_translate() (line 913 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in system_admin_menu_block() (line 2120 of /var/www/drupal/drupal-7.8/modules/system/system.module).
Notice: Undefined index: access in _menu_link_translate() (line 913 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in _menu_tree_check_access() (line 1446 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in _menu_link_translate() (line 913 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in system_admin_menu_block() (line 2120 of /var/www/drupal/drupal-7.8/modules/system/system.module).
Notice: Undefined index: access in _menu_link_translate() (line 913 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in _menu_tree_check_access() (line 1446 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in _menu_link_translate() (line 913 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in system_admin_menu_block() (line 2120 of /var/www/drupal/drupal-7.8/modules/system/system.module).
Notice: Undefined index: access in _menu_link_translate() (line 913 of /var/www/drupal/drupal-7.8/includes/menu.inc).
Notice: Undefined index: access in _menu_tree_check_access() (line 1446 of /var/www/drupal/drupal-7.8/includes/menu.inc).

ipndrmath’s picture

When attempting to view index.php, apache's error.log appends this line:

[Thu Jan 12 15:06:37 2012] [error] [client *scrubbed IP*] PHP Fatal error: Call to undefined function me_to_arg() in /var/www/drupal/drupal-7.8/includes/menu.inc on line 799

juankvillegas’s picture

Just for curiosity, try removing your .htaccess file

Id it doesn't fix the problem, put the file again there.

ipndrmath’s picture

I'm not entirely sure how I solved this problem. The Ubercart guys directed me to this post and I used some of the information from it. I installed drush and fiddled with the modules and it eventually worked again. My apologies that I can't provide a more detailed response, but I hope that the link above might give a shove in the right direction if anyone else has this problem.