ASP.NET error - PELASE HELP!

Ok, it's driving me nuts! My ASP.NET reservation form hosted with discountasp.net stopped working all of a sudden. It was fine till last Thursday and then with no code changes on my side it started giving me a NullReferenceException error. The project still compiles in MS Visual Studio and runs on my development machine without any problems. I'm not an ASP guru, but somehow I was under the impression that in this case it would be safe to say that my code should run in any correctly configured ASP environment. Or am I nuts thinking that? Technical support provides zero value blaming my code for the error and not willing to even look at it. Below is the link to the form as well as some points that I mentioned in my emails to tech support that make me believe that the problem is on their side. Could somebody PLEASE take a look and try to help me with this nightmare? I would GREATLY appreciate it!

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/www.sfcapitol.com/OrderForm.aspx

Here are the facts that tell me that there is something wrong with server configuration:
1. My app was working fine till last Thursday and then it started throwing errors. I DID NOT MAKE ANY CHANGES TO THE CODE. This tells me that something was changed on your server.
2. My app still compiles and runs without any problems on my development server. This tells me that my code has no bugs and all of my classes and files are named correctly, so the code SHOULD WORK IN ANY STANDARD ENVIRONMENT
3. According to my discountASP.net control panel my web root is e:\web\sfcapitolco\htdocs, yet the server tells me that the error is found in the file located in c:\inetpub\wwwroot\digitalbiscuit\limo\. It is possible that you have e:\web\sfcapitolco\htdocs configured as a virtual folder, that points to c:\inetpub\wwwroot\digitalbiscuit\limo. But, when looked at in conjunction with the above mentioned facts, it's worth checking into your server configuration.
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An application working ina development environment is not a guarantee that it will work on a production web server. The environments arequite different.


Also note the username, digitalbiscuit, is a few characters too long to be one of ours.

mjp
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DiscountASP.NET