Vista - BEX error

Hi
I use FSX and got the following error msg while flying a mission that required arrestor-cables 2.6

Problem signature:
Problem Event Name: BEX
Application Name: fsx.exe
Application Version: 10.0.61637.0
Application Timestamp: 46fadb14
Fault Module Name: unknown
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 00000000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6001.2.1.0.768.2
Locale ID: 1033
Additional information about the problem:
LCID: 1033

For those who have fsx, the mission was a wwii based attack on Midway Island,
which was downloaded from simvation.

I know that bex stands for buffer overflow exception.
How does one fix/correct that?
I suspect that the mission and the add on program have caused the conflick because I 've not had this problem before.

Thanks for reading this.

Regards