On Jul 13, 2013, at 11:38 AM, Peter Teeson <ptee...@icloud.com> wrote:

> Well here is my Info.plist from the Build directory app Package Contents in 
> XML form

Your Info.plist is lacking UTI declarations entirely. You need to declare an 
UTI for your document type, then specify that the CFBundleDocumentType maps to 
that UTI by adding the LSItemContentTypes key. The UTI you declare needs to 
confirm to com.apple.package in order for Launch Services to treat the folders 
your app writes as documents.

More information can be found:

- In the Uniform Type Identifiers Overview document

- In the Registering the File Types Your App Supports chapter of the Document 
Interaction Programming Topics (it applies to OS X as well)

- In the AppKit release notes for 10.4 and 10.5

--Kyle Sluder
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