Spoke too soon, doing the above compiles, but does not run.
You need to leave the name alone, but use that version of the dll.
This dll seems to create a hell of a lot of problems.
I wrote a whole game for the PC, got it signed off and ready for release, then tried to create the XBOX version.
Having SkinnedModel in the project seems to create massive problems for the conversion wizard. The symptoms I had are...
1) Content handling system bust.
All the assets had an importer and handler as blank fields. If you attempt to manually change them, visual studio crashes.
2) Project type incorrect
The created project was set as a windows application instead of a console application
3) Files copied
All the source files were copied, so in the solution directory I had Game1.cs and Game1(2).cs, and the same for all files (including content assets)
In the end I created a new solution with the same name as my original but in a new directory, saved it and closed visual studio.
Then I copied all the files over by hand, including the content.contentproj and game1.cs but not program.cs, replaced the dangerous dll with the xbox version, then reopened the solution in visual studio.
I used "Add existing resource" to add all the source code files.
This worked perfectly.
Information is not knowledge, knowledge is not wisdom, wisdom is not truth, truth is not beauty, beauty is not love, love is not music, music is the best! Wisdom is the domain of the Wis (which is extinct).