DHCP Mmc keeps crashing

Hi all, i have set up a new DHCP server role on 2008 R2. When i expand the IPV4 tab on the console it crashes and get the following error. I've tried reinstalling and still the same. Any ideas?

thanks


roblem signature:
  Problem Event Name:      APPCRASH
  Application Name:      mmc.exe
  Application Version:      6.1.7600.16385
  Application Timestamp:      4a5bc808
  Fault Module Name:      dhcpsnap.dll
  Fault Module Version:      6.1.7601.17514
  Fault Module Timestamp:      4ce7c5cb
  Exception Code:      c0000005
  Exception Offset:      0000000000066221
  OS Version:      6.1.7601.2.1.0.272.7
  Locale ID:      1053
  Additional Information 1:      1076
  Additional Information 2:      107606632755ff07cfd43c39abc7625e
  Additional Information 3:      db0f
  Additional Information 4:      db0f0074a8cb605ce8412f6125f3376e

Read our privacy statement online:
  http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
  C:\Windows\system32\en-US\erofflps.txt