Database search page not working

I made a database search page using the link:
http://expression.microsoft.com/en-us/dd571513

but it seems to work only on local host but when i try to upload all it's data to webhost i gives an error like:
Server Error in '/' Application. Runtime Error Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the ...