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Created attachment 6054 [details]
Log of designer errors
Xamarin Studio 4.3.2 (build 2) in the alpha channel
There are no 'custom components' in this project -- it is unable to render 'static' cells in a UITableViewController. Screenshots of Xamarin Studio and Xcode are attached (as well as the log and source project).
For some reason it also isn't rendering the segue between view controllers.
Created attachment 6055 [details]
Xamarin Studio showing designer error
Created attachment 6056 [details]
Xcode showing correct design surface
Created attachment 6057 [details]
iOS Todo app showing storyboard designer error
Created attachment 6058 [details]
iOS app showing storyboard designer error
Firstly, this renders just fine with the latest builds: http://screencast.com/t/qBGweTpxdP5 . I presume that either 4.2.4 will fix whatever the issue was or the next 4.3.x alpha will fix if. If it's not fixed in 4.2.4 let me know and we will look into cherry-picking back whatever the fix is.
There was a known issue whereby rendering would fail sometimes due to a bug in Mono which we thought we had worked around, but we had actually missed one place where it still affected us.
Secondly, the iOS Designer uses 'custom components' to describe every UIView or UIViewController which is exported as a C# class. With that in mind, both TodoListViewContoller and TodoViewController are both custom components.