C# app hangs after publish

I have an app that uses ODP.net. it runs in visual studio debug. when I publish it to the same PC, I run setup.exe and it installs, starts and runs fine. When I go to the exe and start it from there it hangs. I commented out the calls to the oracle methods, republished and it runs. I know I included the dll. Any ideas?

You need to install some native libraries too.
Follow the instructions at this blog post or find the official Oracle documentation.