Release 0.34 install on windows - results in blank screen during test D415/D35

When running any of the test exe in the bin folder - we only get a blank screen now.

We have the same issue with D415 and D435 devices - both of which are working perfectly in the REALSENSE Viewer version.

We also have installed the matching realsense sdk.

and both devices are running the firmware recommended for

Any assistance would be greatly appreciated - this has put us in a last minute jam.

Wes Tatters

Here is the same machine running toe activation test

and returns