Installing Userforms was successful.
But after filling out the form to send in your browser. error:Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, email@example.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
[Wed Oct 19 12:22:44 2011] [error] [client 220.127.116.11] malformed header from script. Bad header=More than one "from" person: php, referer: http://network.org.ua/contact-us/
How to fix the problem?