Actually the warning text goes away if I deactivate the plugin... I figured that I could just implement the features as a custom content type and do no front end theming.... conceptually the content is supposed to only be accessed through the admin pannel anyway...
Here is the error I get (personal info replace with ~), which happens to be exactly the same as cited above:
Warning: Missing argument 1 for
plugin_dir_url(), called in
/home/~/wordpress/wp-content/plugins/back-end-instructions/instructions.php on line 601 and defined in
/home/~/wordpress/wp-includes/plugin.php on line 599
I was asking @angutir which plugins they were using because it is logical that there could be a plugin conflict between your plugin and another plugin. So, in an effort to compare plugin sets we are using, I was asking "what plugins are they using?"
The error only shows up on the admin page for your plugin.
Is it a variable name conflict?