LR 12.02 VuGen is crashing when I type lr_db_connect () function in the Http/Html protocol script.

HP Virtual User generator with Http/Html protocol is crashing when I type lr_db_connect () function in the script.

OS: Windows Server 2008 R2, HP LoadRunner 12.02 

Exception code: c0000374 Excpetion Offset: 000ce843 OS Version: 6.1.7601.2.1.0.16.7

Problem signature:
Problem Event Name: APPCRASH
Application Name: vugen.exe
Application Version: 12.0.2739.0
Application Timestamp: 547b79f6
Fault Module Name: StackHash_b9cb
Fault Module Version: 6.1.7601.23539
Fault Module Timestamp: 57c997df
Exception Code: c0000374
Exception Offset: 000ce843
OS Version: 6.1.7601.2.1.0.16.7
Locale ID: ***********

Kindly help.

Thanks in advance.