Exception was raised when calling per-thread-init function in extension parameng.dll

I am working on the script in Vugen. its working fine but after few hours when am replaying script its throwing the below error. Please advice me for the following issue

Note: I am using Loadrunner 11.52

I thought its Loadrunner installation issue so i used Virtual machine where loadrunner does not have any issue.

But after couple of days when i am again replaying the script after adding some parameterization values , its throwing the error

Error:

Error: Exception was raised when calling per-thread-init function in extension parameng.dll: System Exceptions: EXCEPTION_ACCESS_VIOLATION
Error: Vuser failed to initialize extension parameng.dll.
Error: Exception was raised when calling per-thread-init function in extension parameng.dll: System Exceptions: EXCEPTION_ACCESS_VIOLATION
Error: Vuser failed to initialize extension parameng.dll.
Warning: Extension flexreplay.dll reports error -1 on call to function ExtPerThreadTerminate
Warning: Vuser failed to terminate extension.

I have checked the parameng.dll file too. But could not rectify the issue. Please suggest on this