When I click on "Dump GC Heap" the capture tool crashes with a stack overflow error:

Error: HeapDump failed with exit code -1073741571
#define STATUS_STACK_OVERFLOW            ((DWORD   )0xC00000FDL)  
0022396c 0049c976 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetElementType+0xd6
00223988 0049c886 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeapType.get_ElementType+0x16
00223990 0049c976 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetElementType+0xd6
002239ac 0049c886 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeapType.get_ElementType+0x16
002239b4 0049c976 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetElementType+0xd6
002239d0 0049c886 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeapType.get_ElementType+0x16
002239d8 0049c976 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetElementType+0xd6
002239f4 0049c886 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeapType.get_ElementType+0x16
002239fc 0049c976 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetElementType+0xd6
00223a18 0049c886 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeapType.get_ElementType+0x16
00223a20 0049c976 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetElementType+0xd6
00223a3c 0049c886 clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeapType.get_ElementType+0x16
00223a44 0049c976 clrmemdiag!M

FOLLOWUP_IP: 
+0
004946c6 8bd0            mov     edx,eax

SYMBOL_STACK_INDEX:  1

SYMBOL_NAME:  clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetGCHeapType+56

MODULE_NAME: clrmemdiag

DEBUG_FLR_IMAGE_TIMESTAMP:  0

STACK_COMMAND:  _EFN_StackTrace ; ** Pseudo Context ** ; kb

FAILURE_BUCKET_ID:  WRONG_SYMBOLS_c00000fd_ClrMemDiag.dll!MemoryDiagnostics.RealTimeMemGCHeap.GetGCHeapType

BUCKET_ID:  APPLICATION_FAULT_WRONG_SYMBOLS_STACK_OVERFLOW_clrmemdiag!MemoryDiagnostics.RealTimeMemGCHeap.GetGCHeapType+56

IMAGE_NAME:  ClrMemDiag.dll

WATSON_STAGEONE_URL:  http://watson.microsoft.com/StageOne/HeapDump_exe/1_0_0_0/503f6784/unknown/0_0_0_0/bbbbbbb4/c00000fd/00494a00.htm?Retriage=1

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My VS2010 uses 1GB of RAM and I would like to know what uses 300MB managed heap.