Internal Server Error

[drlunar]

I'm trying to install SMF [ Free Forum Software ], though everytime I try to I get,

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, no-reply@x10hosting.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.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

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The same happens with Joomla & Wordpress...

[Skizzerz]

1) check file and folder permissions. Files need to be 644 and folders need to be 755. Anything set to 666 or 777 causes Internal Server Errors
2) check .htaccess files and remove any mention of php_flag, php_value, etc.