Monotouch: "Unknown solution item type" after upgrading

I recently just upgraded to Lion, upgraded my XCode install, and also upgraded to the latest MonoDevelop via the updating tool in the app. Once all the installations were done I tried to load in my project that I've been working on and get the following error:

"Error trying to load the project 'Users/filepathstuffs/project.csproj': Unknown solution item type."

The other thing I ha开发者_运维问答ve noticed is that if I try to start a new project I don't even have the option anymore to start an iPhone or iPad project. Any help as to why this could have happened and what I can do to resolve it would be greatly appreciated.

Update: This is resolved. Poupou was correct in his assumption that the MonoTouch version was out of date. If upgrading to Lion your versions should look something like this

OSX: 10.7 Xcode: 4.1 MonoDevelop: 2.4.2 MonoTouch: 4.0.4.1

For some reason the MonoDevelop add-in manager didn't recognize that the MonoTouch add-in was out of date. I had to re-download and install from the website.

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This is resolved. Poupou was correct in his assumption that the MonoTouch version was out of date. If upgrading to Lion your versions should look something like this

OSX: 10.7 Xcode: 4.1 MonoDevelop: 2.4.2 MonoTouch: 4.0.4.1

For some reason the MonoDevelop add-in manager didn't recognize that the MonoTouch add-in was out of date. I had to re-download and install from the website.