Image uploader error

I am getting this message and seems it may be related to .htaccess issues. Except I don’t know what that means, where to change that, etc.

Internal Server Error

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

Please contact the server administrator 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 Server at words-fail.com Port 80