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Editorial Team
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Asked: 2026-05-14T15:02:24+00:00

I have a website written using ASP.NET. We have a development machine and a

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I have a website written using ASP.NET. We have a development machine and a deployment server.
The site works great on the development machine, but when is transfered (using simple FTP Upload) generates strange behavior. It starts working just fine, but after a while stops working and throws an exception “Exception: Object reference not set to an instance of an object.”.
The deal is that the absolute path of the website on the development machine is different than on the deployment server (and why should they be similar?) and the exact error is:

Exception: Object reference not set to an instance of an object.
at SOMEPROJECT_Objects.Player..ctor(Int32 PlayerID) in C:\inetpub\wwwroot\SOMEPROJECTSolution\ALLPROJECT\SOMEPROJECT_Objects\Player.cs:line 123 at SOMEPROJECT_GameLayer.M_Game.PlayerActiveGame(Int32 PlayerID) in C:\inetpub\wwwroot\SOMEPROJECTSolution\ALLPROJECT\SOMEPROJECT_GameLayer\M_Game.cs:line 85 at Web.getsms.Page_Load(Object sender, EventArgs e) in C:\inetpub\wwwroot\SOMEPROJECTSolution\ALLPROJECT\SOMEPROJECT-sms\Web\getsms.aspx.cs:line 59

The address that it is looking for is the address on the DEVELOPMENT machine, where as the site now resides on the deployment server.

Any ideas why this happens would be appreciated.

Thanks,
Roman

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1 Answer

  1. Editorial Team

    It is correctly telling you where to find the problem in the source code in the location it was last compiled from. You don’t normally deploy all of your source to a production machine.

    Go back to the development machine and examine the lines of code it is pointing to, and you should be able to determine which object is null that it is complaining about.

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