NIS Sonar/Auto-Protect problem with game Ragnarok Online

Hello everyone,

I'm using a Windows 7 Ultimate 64bit PC with the latest version of NIS.
My system is free of any spyware, malware or viruses.
Well, I like to play a certain video game every now and then, it's called "Ragnarok Online". It worked very well but I just noticed now after not playing the game for about 3 months that it won't start anymore - the game has been updated to the latest version by the integrated update patcher.

This is the Microsoft error I get:

Problem signature:
  Problem Event Name:    APPCRASH
  Application Name:    Ragexe.exe
  Application Version:    0.0.0.0
  Application Timestampl:    50298ee5
  Fault Module Name:    Ragexe.exe
  Fault Module Version:    0.0.0.0
  Fault Module Timestamp:    50298ee5
  Exception Code:    c0000005
  Exception Offset:    00588de1
  OS Version:    6.1.7601.2.1.0.256.1
  Locale ID:    1031
  Additional Information 1:    0a9e
  Additional Information 2:    0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:    0a9e
  Additional Information 4:    0a9e372d3b4ad19135b953a78882e789


What did I do or change the last 3 months in or on my system:
- Updating Windows with the latest security patches
- Upgrading to the latest NIS version

What helped me to be able to run the game again was:
- Excluding the whole game folder with the Ragnarok Online game from Sonar, Insight and Auto-Protect.

But I don't like to exclude any application from a security option since I think every little hole I make in a security system might make my system able to be attacked.

Could someone please help me further regarding this issue.