Class not registered when running sample acrobat app

I am new to this and built a test app to search through a PDF usinv dotnet (C#)

the app builds correctly but when I run it I get the folloowing error

System.Runtime.InteropServices.COMException: 'Retrieving the COM class factory for component with CLSID {7CD069A1-50AA-11D1-B8F0-00A0C9259304} failed due to the following error: 80040154 Class not registered (0x80040154 (REGDB_E_CLASSNOTREG)).'

The class in in the registery (I looked, windows 11) and the project references are all found in Visual Studio 2022 but the DLLs come from my licensed 2015 Acrobat Pro

using Acrobat;
using AFORMAUTLib;
---
IAFormApp formApp = new AFormAppClass();

Thanks for looking!