I’m getting a 500 error when I try to load the admin page, but it’s not the plugin’s fault. Here’s the situation.

As you know from a previous post I run a WPMU site, and I’ve recently added a “Premium Features” feature. As part of the preparation for launching that, I’ve moved the simple-forum plugin from wp-content/plugins to wp-content/premium-plugins.

That new directory functions identically to the regular plugins directory, but it’s only available for blogs which have a certain flag set. In order to keep from breaking things, I had to change the hard-coded references to the plugins directory to premium-plugins.

Simple Forum works just fine, but I can /not/ get sf-admin.php to load because I receive a 500 error when I try now. The link that gets generated under the Manage tab is “http://unsilence.com/simple-forum/sf-admin.php” which doesn’t look right to me. I’ve tried source-diving to see if there’s something I missed, but I don’t see anything.

I’m hoping that it’s not the new premium plugins feature and that there’s something that I need to change in your code. Do you have any ideas of what might be going wrong here?

“Premium Plugins” is new to you, because it is new; however, it is functionally identical to “Plugins” (because my wp-admin/premium-plugins.php is the same file as wp-admin/plugins.php but with a few changes). The path is correct when it’s in wp-content/plugins … it’s only when it’s in wp-content/premium-plugins that it breaks. Might be my implementation of premium plugins then. Crap.

Yellow Swordfish said:

Well - I think we still need to check the call above…

Well, another plugin I have in that directory, wp-slimstat works properly so I took a look at the call it uses. This is its call:

add_submenu_page( ‘index.php’, ‘SlimStat’, ‘SlimStat’, 1, __FILE__, array( &$wpSlimStat, ‘displayStats’ ) );

I added the __FILE__ bit, and wound up with this:

Warning: call_user_func_array() [function.call-user-func-array]: First argumented is expected to be a valid callback, ‘/simple-forum/sf-admin.php’ was given in /home/unsilenc/public_html/wp-includes/plugin.php on line 123

I do know that WPMU uses the same calls as WP, but I’ll check around on the WPMU forums.