Missing references in VBA

Hi Everyone

 

I've recently been tidying some code and started to use my own macro files as references so as not to use the same code in lots of places. I save the SWP and reference it in my other project but when I run the macro that references other files it tells me that it is missing

 

 

Even after I click browse, select the file and click ok, it still says missing.

These files are exactly where the location says they are and have not been moved or edited. Am I doing something wrong?