I assume you are using windows dll, this is ODE related issue, check "/Stack:num" option for the compiler. This can occur when you have masses of simultaneous collisions happening. In other words, there can be plenty of objects around but many simultaneous collisions can be a problem.
for more information.
Here's a snippet from Ode's documentation:
12.11. The Windows version of ODE crashes with large systems
ODE requires stack space roughly on the order of O(n)+O(m2), where n is the number of bodies and m is the sum of all the joint constraint dimensions. If m is large, this can be a lot of space!
Unix-like operating systems typically allocate stack space as it is needed, with an upper limit that might be in the hundreds of Mb. Windows compilers normally allocate a much smaller stack. If you experience crashes when running large systems, try increasing the stack size. For example, the MS VC++ command line compiler accepts the /Stack:num flag to set the upper limit.