When trying to install SharePoint Designer 2010 on my PC, I ran into an error saying Designer 2007 was installed on the box.
The problem was, I had SharePoint Designer 2007 installed, and it’s a 32-bit install. When I tried to uninstalled Designer 2007 I was getting this error:
The language of this installation package is not supported by your system
No matter what google-related-fix I tried, I couldn’t uninstall it.
What I did to fix things:
Installed Office 2007
Installed Designer 2007
Uninstalled Desinger 2007
Uninstalled Office 2007
Then I was able to install SharePoint Designer 2010.