What is this error?

[Bluga]

The instruction at "0x004066b8" referenced memory at "0x038ee00c9". The memory can not be "read"

I get this a lot and my program just crashes.

 

[bluezebra1098]

The message is obviously pointing to the culprit. Check out your stick(s) of memory and see if it is bad or if you have more than one try removing one at a time until you resolve the error message.