Thank you for your email. I couldn't get setup to open, it turns out that the Net 3.5/2.0 tip offered earlier this evening did work such that this time Sentinel did successfully load. So the failure the past several days of Sentinel may just have been the .NET framework within my Windows OS.
The programming issue is that the Pottawattamie County, IA system is not working. It is part of the Omaha regional system (ORION) that covers counties in both states and I am most interested in receiving the Council Bluffs PD with that system. I am aware that I can listen to it via a user that has it on Broadcastify, but two attempts on different SD cards have yielded nothing to date despite the best honest efforts by the company that I purchased the scanner from.