User13824 postedXcode 6's ibtool has a bug under OS X 10.10 Yosemite that causes an error when attempting to compile interface documents that reference image resources within subfolders.
http://stackoverflow.com/questions/25754763/cant-open-storyboard
Example failing image path (in the solution folder)
Resources\Images\image.png
Example working image path (in the solution folder)
Resources\image.png
Error message
// ibtoold[881:13909] Exception raised while unarchiving document objects - -[NSTaggedPointerString getCharacters:range:]: Range {0, 10} out of bounds; string length 4
// /* com.apple.ibtool.errors */
// /Users/macuser/Desktop/iPhoneApp1/iPhoneApp1/MainStoryboard.storyboard: error: The document "MainStoryboard.storyboard" could not be opened. The operation couldn’t be completed. (com.apple.InterfaceBuilder error -1.)
// Recovery Suggestion: Check the console log for additional information.
// ibtool exited with code 1
Workarounds
Here are a few possible workarounds that can be used until Apple resolves this bug.
Option 1: Manage all UIImageView.Image properties in code
Rather than setting the Image property of a UIImageView in the storyboard or .xib file, you can set the property in one of the view life cycle override methods in the view controller (for example, in ViewDidLoad()). See also http://developer.xamarin.com/guides/ios/applicationfundamentals/workingwith_images/ for tips about using UIImage.FromBundle() vs. UIImage.FromFile().
Option 2: Move all of the image resources to the top-level Resources folder
After this change, you will need to update the storyboard and .xib files to use the new top-level image paths.
Option 3: Set the LogicalName for any problematic image assets so they are copied to the top level of the .app bundle
For the example above, the .csproj file will by default contain the following entry:
<BundleResource Include="Resources\Images\image.png" />
You can change this element and add a LogicalName so that the image will instead be copied to the top level of the .app bundle:
<BundleResource Include="Resources\Images\image.png">
<LogicalName>image.png</LogicalName>
</BundleResource>
In Xamarin Studio the LogicalName can also be set using the "Resource ID" field for the image under "View -> Pads -> Properties". (See also: http://stackoverflow.com/questions/16938250/xamarin-studio-folder-structure-issue-in-ios-project/16951545#16951545)
After this change, you will need to update the storyboard and .xib files to use the new top-level image paths. Xamarin Studio will automatically update the list of autocompletions for the "Image" property in the iOS Designer. In Visual Studio, you'll need to edit the path by hand (to image.png for the example). The iOS Designer will then display this as a missing image, but the project will build and run correctly.
