My AddIn stopped loading

Hi all;

I made a small change in my code which is a COM (not VSTO) AddIn. And now it doesn't load when I run from VisualStudio. I ran FUSLOGVW and I think the key issue is:

LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Office/root/Office16/AutoTag2013.DLL.
LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Office/root/Office16/AutoTag2013/AutoTag2013.DLL.
LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Office/root/Office16/AutoTag2013.EXE.
LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Office/root/Office16/AutoTag2013/AutoTag2013.EXE.
LOG: All probing URLs attempted and failed.

It's not in any of those locations. And it's not in the GAC. But it is registered with the location in the registry. The location being where I compiled it.

Any idea what I need to do in this case?

thanks - dave