I lost permission to access admin/content for user 1 I uninstalled several contributed modules of my site and suddenly I lost the permission to access admin/content for user 1.

As far as I know this is not related to any contributed module.

When I try to access this page admin/content I get a message "You are not authorized to visit this page.".

How can I trace this? I run cron, clear caches and even run sites/all/modules/registry_rebuild/registry_rebuild.php to rebuild registry.

Is Drupal7 using the Commerce Kickstart distribution (I disabled all commerce modules)

Update1: I just rebuild permission at: admin/reports/status/rebuild but problem persit.

Also there are these error messages:

Notice: Trying to get property of non-object in user_access() (line 808 of /home/temporal-13/www/modules/user/user.module).
Notice: Trying to get property of non-object in user_access() (line 820 of /home/temporal-13/www/modules/user/user.module).
Notice: Trying to get property of non-object in user_access() (line 821 of /home/temporal-13/www/modules/user/user.module).
Notice: Trying to get property of non-object in user_access() (line 827 of /home/temporal-13/www/modules/user/user.module).
Notice: Trying to get property of non-object in user_access() (line 830 of /home/temporal-13/www/modules/user/user.module).
Solved: the problem was the module: admin_views I just disabled it and the problem was gone.