There may be cases where you are using IMCE with Drupal and have the IMCE appear on node add/edit pages which use a secure URL. You need to add the following to the ignore section of the Secure Pages module.
Go back to your node add/edit page and you should now have the add button in IMCE.
You will get this error if you have logintoboggan and email_registration installed within Drupal 5 and visit the site as an anonymous user with the user login block enabled. This is caused by the modifications made to the user login block by the logintoboggan module.
You can fix this without hacking the email_registration.module file.
On a Windows XP SP2 machine I have had, both the command prompt (cmd.exe) and regedit (regedit32.exe) failed to load and just restarted explorer.exe which closed all open windows and brought you back to the desktop. This also brought up the Restore Active Desktop message on the desktop and the Restore button failed with a script error.
On most start ups, explorer didn’t load at all, but could be manually by bringing up the task manager (Ctrl + Alt + Delete) and going to File –> Run and typing ‘explorer.exe’ (without the quotes).
I don’t know where the malware came from, but there were traces from Limewire, so one could hazard a guess that this was likely the cause.
I just set up XAMPP on my Vista x64 PC and found that after installing Drupal 6 that the status report was throwing up an error.
HTTP request status
Your system or network configuration does not allow Drupal to access web pages, resulting in reduced functionality. This could be due to your webserver configuration or PHP settings, and should be resolved in order to download information about available updates, fetch aggregator feeds, sign in via OpenID, or use other network-dependent services.