Class Module Updates Generating Error

Hi, I'm new to this forum but was wondering if someone could help me with an error I'm getting.

I have an existing interface module that I needed to add a couple of properties to. When I compile I get the following error:

Compile Error:
Object module need to implement '[PropertyName]' for interface '[ClassModule]'

All I need to do is add a couple of Get/Let properties. Why is this happening on my new properties, but it's fine with all the rest?

Thanks for any help!
BMWessel :sick: