Currently Being ModeratedNov 13, 2012 6:35 AM (in response to gsilis)
We received a solution from Apple developer support a few days ago, thought I'd post this here in hopes that it gets indexed for anyone who runs into this problem. I can't speak to this being a change from iOS 5 to iOS 6, even though it would appear that way.
The mime type set in the Exported UTI must match up with the mime type of the email attachment. Our plist file had the mime type set to application/octet-stream, but the email was being attached as an application/json mime type. If these don't match, it appears that your application will appear in the "Open with..." menu, but it won't launch your application when you try to open an email attachment.
We switched both to application/json and it fixed the problem.
Currently Being ModeratedJul 13, 2013 5:13 AM (in response to gsilis)
Hi! You have given me some hope - I have a very similar problem and too have been tearing my hair out. My app has stopped launching in iOS6 from an email attachment containing XML data, but of a user defined type .ftl. My application was launched in iOS 4 without any problems and I get the same:
LaunchServices: Invalid LSOpenOperation request - No applications found to open document
Error .... My .info file is also absolutely fine. Mate, how do you establish the MIME type of your email attachment?