When I contacted form 1.7.7.1 plugin activate Internet Explorer gives each page under a yellow triangle with the message that mistakes are found on the page. Reference is made to sign 3 rule 2.
Rule 3 looks a source like this:
<head profile="http://gmpg.org/xfn/11">
If I disable the plug is there is no error.
The plugin works properly.
In Firefox are no errors to be seen.
What's the problem?