Client 2014.0.1 crashes when single click on an attachment

When a user double clicks an attachment it opens like it should be. When a user clicks only once on an attachments, or is to slow to click a second time, Groupwise freezes and crashes.

In the Event Viewer I see :
Faulting application name: GrpWise.exe, version:, time stamp: 0x54652d8c
Faulting module name: MSVCR110.dll, version: 11.0.51106.1, time stamp: 0x5098858e
Exception code: 0x40000015
Fault offset: 0x000a327c
Faulting process id: 0x1094
Faulting application start time: 0x01d0a8ea92587b0c
Faulting application path: C:\Program Files (x86)\Novell\GroupWise\GrpWise.exe
Faulting module path: C:\Windows\system32\MSVCR110.dll

The Groupwise client is : 14.0.1 Build 118418

Anyone an idea ?