Gh-SAP communication error

Hello all!

I've been using a very basic geometry gym model of four columns to learn the basics (defining a load, applying a point load, etc.) and baking it to SAP v 15 (see image attached). 

It worked fine, but then recently I've had to re-install SAP v 15: now when I try to bake the model to SAP it doesn't work and I only get this message from Rhino:

Retrieving the COM class factory for component with CLSID {05C24B9F-F327-47C2-B6EF-5660A8175ECB} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

I'm not exactly sure how to fix this.  Any help would be much appreciated.

Thank you!