Trouble DeployingC# Windows Application

Hi,

I am new to deploying C# windows applications.  I recently built an application and copied the files in the release folder to a usb drive.  I then copied that folder from the usb drive to a different computer and was able to run the application. However, when I tried to do the same on a third computer, I got a failed to initialize program error.

I was under the impression that my C# program was self contained, am I missing some installations on the third computer? If so, can I include these in my installations to remedy this problem? 

Any insight would be greatly appreciated.

Thanks,

Paul