Save active workbook to other drive error

Well, i'm back, and unfortunately with the lapse of time have forgot most of which i once knew, but not the fact that you folks saved me countless times. Thank you, once again, for considering my issue-

I bought a new computer and hooked it up early this week - the previous was almost 14 years old and had too many bandaids to keep it going. I copied my main spreadsheet to the new computer and now am running into a problem trying to save the workbook to an alternate location, as i keep two operationally ready copies. The main difference in my configuration as far as i know is that the program is regularly run from a location on my D: drive, whereas the alternate save is to my C: drive.

The code line i am using is:

ActiveWorkbook.SaveAs "C:\Program Files (x86)\Kraken\Kraken.xlsm"

and the error message as is attached hereto, a runtime error 1004.

Am i doing something wrong? Is there another method or workaround?

The code used to work fine when both were on the same drive though in different folders, but that might not be the issue-

Once again, so many thanks for all of your help over the years-
-Bruce