The crash has to do with access to the Contacts. Here is what you need to do for the app to work:
1) Goto iPhone Settings from main screen
2) Goto Privacy
3) Goto Contacts
4) Turn ON access for Intelli IM
The App accesses the Contacts to merge any information between OCS and iPhone and displays them in one place.
We will fix the App in a following release so that if Contacts is not accessible, it would continue to work. For right now, you need to give it access to contacts.
Thanks for your patience and support!