I get an error 2209 when trying to install.

For Windows Vista and later, DO NOT INSTALL TO THE C:\Program Files directory or it will not Work!!!! When you run the installer please change the default installation directory.

When I try to open the software it comes up with a message that says Run-time error ‘75’: path/file access error.

This error happens when NM Gun Collector is installed in the Programs directory. It was not an issue when I released the software but later Microsoft changed their security policies so it became a problem. You can find more info here: https://www.nmcollectorsoftware.org/

I would suggest you uninstall it and then reinstall it in a different directory.

From nmCollector.net LLC