I get "Unable to download application" with wifi ad hoc, but app installs in iTunes

[leafmode]

After upgrading my iPhone to iOS 5 and Xcode to 4.2, I've been getting "unable to download application" error when I try to download the beta build over air (wifi). I'm able to download the same beta ipa through iTunes though.

I'm also using the manifest.plist file generated by Organizer > Share.

This used to work correctly with the earlier version of Xcode 3.4 and iOS 4. Does anyone have suggestions on how to resolve this? Thanks in advance!

[leafmode]

I fixed the issue!

The Icon.png icon mentioned in manifest.plist was missing in the website deployment directory.

<dict>
	<key>kind</key>
	<string>display-image</string>
	<key>needs-shine</key>
	<true/>
	<key>url</key>
	<string>http://....../Icon.png</string>
</dict>