Anyone who maintained/developed something with or for Joomla, or needed to troubleshoot something on a misbehaving Joomla site knows the feeling: something does not working, and the available error messages aren't showing enough information to help you track down the root of the issue.
Any extra bit of info can help, so here is a tip for Joomla 1.7 which might help you got that.
- Log in to your administrative section of your site by going to http://yoursite.com/administrator or localhost/yoursite/administrator.
- Go to Site >> Global Configuration.
- Go to Server >> Error Reporting. Click on the dropdown and select Maximum.
- Save your changes.