I'm attempting to develop and deploy an in-house add-in for Excel 2003 using Visual Studio 2008. When I first create the project (along with the included Setup project, as well as add a SetSecurity project), everything works and deploys on client machine's flawlessly. I problem starts when I attempt to reopen my solution in Visual Studio and I'm forced to go through the Visual Studio Conversion Wizard. After the wizard has finished and I compile, my add-in no longer works on client workstations.
On the client workstations, I've checked that the security settings are still correct with caspol and everything looks good as the add-in has full trust. For whatever reason now though, the add-in will not run in Office.
I'm using Visual Studio 2008 Professional 9.0.30729.1 SP, with .NET Framework 3.5 SP1.