I have a simple app which was built in Visual Studio 2005 Express Edition. This uses ClickOnce and worked with no problems at all.
However, after I upgraded to VS 2008 Express Edition, some users cannot install the updated version of the app without getting the error:
"Unable to install or run the application. The application requires that assembly WindowsBase Version 22.214.171.124 be installed in the Global Assembly Cache (GAC) first"
Uninstalling the app doesn't help.
I have looked in the app settings in VS and there are no .Net 3.0 references or prerequisites.
I do not want to have to install .Net 3.0 on every users machine, especially if it's not required.
Does anyone know what is causing this or what I can do to get round it? Oh, and reinstalling VS 2005 Express isn't an option :)