I have been working on a project with an older version of the API.  It is now time to upgrade to the never version but when I designate the new path, VS tells me

I have tried a number of things but Visual studio just does not want update to a newer version. 

One thing that I did was to copy the newer version of the API file over the top of the old file.  VS recognized the path but then produced a number of errors, stating "Name 'swconst' is not declared.'  (as an example). 

in the Module1.vb  >> Imports SolidWorks.Interop.swconst (Doesn't seem to have any effect)

Now I'm getting these errors and don't have a clue how why?

Any and all suggestions are very appreciated.