Hi,
I've registered here and posted on a thread from 2009 to say thanks to the friend that pointed out the problem was in 'active virus control' (controle de vírus ativo in portuguese). It happens that I had the same securom issue when launching Batman Arkham Asylum GOTY Edition through Steam. The error was:
Problem Event Name: APPCRASH
Application Name: BmStartApp.exe
Application Version: 0.1.0.8
Application Timestamp: 00000000
Fault Module Name: BmStartApp.exe
Fault Module Version: 0.1.0.8
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 00164c64
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1046
Additional Information 1: 958d
Additional Information 2: 958d49ab033d3350ff945ad146163527
Additional Information 3: 8732
Additional Information 4: 8732c47a50fc4b7048d5759c2b45738e

If I turn off the option circled in red the game works, if I turn it on it doesn't and game doesn't even launch because somehow it forbids securom access to memory. It was not only preventing this game but also another game I have causing it to give a BEX error:
Problem Event Name: BEX
Application Name: trose.exe
Application Version: 1.1.3.326
Application Timestamp: 42cb8537
Fault Module Name: StackHash_e98d
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 00000000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1046
Additional Information 1: e98d
Additional Information 2: e98dfca8bcf81bc1740adb135579ad53
Additional Information 3: 6eab
Additional Information 4: 6eabdd9e0dc94904be3b39a1c0583635
So I hope you guys from bitdefender find a way to fix this error because it's been almost 4 years and the same problem persists. When wil you fix it? Never? I've tried lots of things, even formatted my pc to no use. If I had known earlier it was only this causing all the trouble here...
The trose.exe was working fine until last sunday (28/04/2013). I guess some update broke this module and started preventing applications to access memory.
I do hope this thread helps someone out there.
Forgive my english, it is not my main language.