I use the BI tools extensions in VS 2019, being ssis ssas and ssrs. I recently upgraded my install of VS2019 p version 16.8.4, since then I can no longer open Analysis Services Tabular Model (SSAS) solutions in VS 2019, the solution opens but whenever I try to open a model I receive the following exception: Method not found: 'Microsoft.AnalysisServices.Tabular.Model Microsoft.AnalysisServices.Database.get_Model()'.
I did a quick bing search for a solution and found many references to SSIS, so I thought maybe the best thing was to try uninstalling VS and re-installing, the SSIS extension requires a separate install, whereas the other 2 install via the installer. So I installed SSAS and SSRS extensions, and was able to open my SSAS solutions fine, then I installed the SSIS extension and this got me back to the same exception. One small complication may be that I also use the full set of KingswaySoft SSIS extensions.
If I uninstall the SSIS visual studio extension then I can use ssas, but it seems problematic if I need to uninstall the SSIS extension when I need to do SSAS work
Any help would be much appreciated