I receive a fatal error too when trying to activate the plugin:
Your store uploads folder is not available.
That is definetely not true.
Directories wp-content and uploads where chmodded 777
Then I uploaded the plugin
All other plugins were turned off
Then tried to activate
Then the error occurred.
Safe Mode is Off
Now what…?
Same s… happened to me. Contact forms work fine in FF and Opera. IE 7 and 8 don’t work. No wrong XHTML and all other plugins deactivated – still nothing happens when sending forms with IE.
