Microsoft Lync 2013 has stopped working error

I'm running Windows 7 64 bit OS on the dell OptiPlex 780. I recently rebuilt the system and installed Office 2013 Pro Plus 32bit. everything works except Lync, each time it starts I get the starting screen and then the Microsoft Lync has stopped working error. the Application event log has the event information below. We have a shoretel VOIP phone system and I have updated the shoreware client.

any ideas ?

Event log information

Event 1000

Faulting application name: lync.exe, version: 15.0.4517.1004, time stamp: 0x51b13ed6

Faulting module name: UccApi.dll, version: 2.0.6362.67, time stamp: 0x48386abc

Exception code: 0xc0000005

Fault offset: 0x00144a26

Faulting process id: 0x1094

Faulting application start time: 0x01ce849fc2bf8739

Faulting application path: C:\Program Files (x86)\Microsoft Office\Office15\lync.exe

Faulting module path: C:\Program Files (x86)\Shoreline Communications\ShoreWare Client\UccApi.dll

Report Id: 022d388f-f093-11e2-a5ac-0010188ab4b4