our users get the following warning: "A program is trying to access e-mail addresses you have stored in Outlook. Do you want to allow this?".
This comes up when greenshot is configured to "choose destination dynamically" and a screenshot is made. You don't have to click on "Microsoft Outlook", it's enough when you only see the destinations in the context menu of greenshot.
The warning blocks further usage of greenshot, and it's in background. So our users don't see why greenshot "hangs"... until you choose to deny or allow the access to Outlook.
We use Windows 7 Enterprise x64 and Office 2010 Prof Plus x86, both with latest Service Packs and patches. Greenshot is latest version 188.8.131.52 (64Bit).
Do you have any hints to get rid of this message?