I have installed multisite to my site - http://www.fcsupporters.com.
However when I add a site (subdomain) to wp via the wp admin area if it is one that I had previously created when I wasnt using multisite via my hosting control panel then it comes up with this 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.
Apache/2 Server at arsenal.fcsupporters.com Port 80.
When I create a site (subdomain) that I havnt previously used or set up in the hosting control panel then it works fine for example - hyde.fcsupporters.com is one that I havnt used or set up before in the hosting control panel so it work.
I have deleted all the subdomains out of the hosting control panel and am still getting the error.