1.5.1 Move struct crash

Hey guys.

I've taken stock TGE 1.5 and added a VectorF to the Move struct, like this:

struct Move
{
   // packed storage rep, set in clamp
   S32 px, py, pz;
   U32 pyaw, ppitch, proll;
   F32 x, y, z;          // float -1 to 1
   F32 yaw, pitch, roll; // 0-2PI
   U32 id;               // sync'd between server & client - debugging tool.
   U32 sendCount;

   

   bool freeLook;
   bool trigger[MaxTriggerKeys];


   //// only new line *********

   VectorF thrust;

   ///////  *******

   void pack(BitStream *stream);
   void unpack(BitStream *stream);
   void clamp();
   void unclamp();
};

When running in Debug mode I now get a memory error (stack at the end of the post).

I presume there's some constant somewhere I need to change - can anyone enlighten me on how to add to the move struct without causing this problem?

Thanks,
Ian

torqueDemo_DEBUG.exe!Memory::treeRemove(Memory::FreeHeader * hdr=0x03f6f200)  Line 487 + 0x9 bytes	C++
 	torqueDemo_DEBUG.exe!Memory::alloc(unsigned int size=2048, bool array=false, const char * fileName=0x00d73250, const unsigned int line=56)  Line 974 + 0x9 bytes	C++
 	torqueDemo_DEBUG.exe!dMalloc_r(unsigned int in_size=2048, const char * fileName=0x00d73250, const unsigned int line=56)  Line 1272 + 0x13 bytes	C++
 	torqueDemo_DEBUG.exe!VectorResize(unsigned int * aSize=0x03ebefac, unsigned int * aCount=0x03ebefa8, void * * arrayPtr=0x03ebefb0, unsigned int newCount=30, unsigned int elemSize=64)  Line 56 + 0x3a bytes	C++
 	torqueDemo_DEBUG.exe!Vector<Move>::resize(unsigned int ecount=30)  Line 468 + 0x1d bytes	C++
 	torqueDemo_DEBUG.exe!Vector<Move>::increment(unsigned int delta=30)  Line 256	C++
 	torqueDemo_DEBUG.exe!GameConnection::moveReadPacket(BitStream * bstream=0x00e62c84)  Line 380	C++
 	torqueDemo_DEBUG.exe!GameConnection::readPacket(BitStream * bstream=0x00e62c84)  Line 846	C++
 	torqueDemo_DEBUG.exe!NetConnection::handlePacket(BitStream * bstream=0x00e62c84)  Line 525 + 0x13 bytes	C++