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the signature was working well before installing the last xamarin.mac..
Exception Type: EXC_CRASH (Code Signature Invalid)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
=== Xamarin Studio ===
Version 6.0 (build 4520)
Installation UUID: 2a46676f-5eb8-4569-9aa7-630cd15bdfc2
Mono 4.3.2 (mono-4.3.2-branch/ba2e5e4) (64-bit)
GTK+ 2.24.23 (Raleigh theme)
Package version: 403020467
=== Apple Developer Tools ===
Xcode 7.2.1 (9548.1)
=== Xamarin.Mac ===
Version: 220.127.116.114 (Business Edition)
=== Build Information ===
Release ID: 600004520
Git revision: a354b2cb9df4b96f50b0ccb960dbdd5a9155510c
Build date: 2016-02-18 14:52:07-05
Xamarin addins: 8e54979f23feee160d245a3c33e43e77779b1eb4
Build lane: monodevelop-lion-master
=== Operating System ===
Mac OS X 10.11.3
Darwin macbook.home 15.3.0 Darwin Kernel Version 15.3.0
Thu Dec 10 18:40:58 PST 2015
it's a sandboxed app (icloud)
I'm glad you were able to test out the alpha build of Xamarin.Mac. There was a bug related to iCloud keys that was fixed after your build was release, that may fix this.
However, your bug report does not contain an example / steps to reproduce, so I'm unable to validate it.
One thing to note is that you may have invalid strings in your entitlement file, which can cause crashes on launch such as yours.
One way to check is to open your entitlement.plist file in "Source" mode. At the bottom of the pane (normally middle of screen) you can see "Entitlements and Source" buttons. Or you can use an external test editor.
Since CloudKit, the strings related to iCloud need to prefixed with iCloud. You can try temporarily removing your iCloud keys to see if that "fixes" the crash on launch.
I've also noticed that you appear to have a business license. While you are welcome to file raw bugs, specially in the case of Alpha builds, you are also eligible to open tickets at http://xamarin.com/support. You may want to consider doing that in the future.
the same entitlements plist is working in my swift test
it still crashing with the last update:
Xamarin.Mac Version: 18.104.22.1686 (Business Edition)
even if I remove all sandbox/icloud parts in the entitlements.plist the app crash
it works only if I don't sign it
Version: 22.214.171.124 (Business Edition)