Hi,
One of potential reasons is DEP (data execution prevention) settings.
- Click Start, click Run, type sysdm.cpl, and then click OK.
- On the Advanced tab, under Performance, click Settings.
- On the Data Execution Prevention tab, use one of the following procedures:
- Click Turn on DEP for essential Windows programs and services only to select the OptIn policy.
- Click Turn on DEP for all programs and services except those I select to select the OptOut policy, and then click Add to add the CRW32.exe (you have to navigate to CR 2011 executable)
Check below threads, It may help you.
http://scn.sap.com/thread/3245960
http://www.morovia.com/kb/PRB-Crystal-Reports-Crashes-Preview-Report-10079.html
--Praveen G