[V4Rb2] CreateULongField crashes app

[Charles Yeomans]

I'm attempting to add a ULong field to an existing table and the result 
is an application crash, either using V4Rb 2.0.5fc3 or VStudio.  Anyone 
else seeing this?

--------------
Charles Yeomans

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0xbf7fffb0

Thread 0 Crashed:
0   vsdk_macho.dylib             	0x005f4b18 0x4fb000 + 0xf9b18
1   Kernel_Macho_BSD_Final.dylib 	0x0688d040 0x6677000 + 0x216040
2   Kernel_Macho_BSD_Final.dylib 	0x06891b48 0x6677000 + 0x21ab48
3   Kernel_Macho_BSD_Final.dylib 	0x067a9eb8 fbl::RBTree_Node::Left() 
const + 0x70
4   Kernel_Macho_BSD_Final.dylib 	0x067aa2c8 
fbl::RBTree_Node::Is2Node() const + 0x3c
5   Kernel_Macho_BSD_Final.dylib 	0x0668b4d8 
fbl::SegmentMap_RBTree::_PeekRight(fbl::RBTree_Node*&) + 0xc0
6   Kernel_Macho_BSD_Final.dylib 	0x0668b0cc 
fbl::SegmentMap_RBTree::_SearchRB(fbl::RBTree_Node*&, 
std::pair<unsigned long, unsigned long>&) + 0x4c
7   Kernel_Macho_BSD_Final.dylib 	0x0668b0e4 
fbl::SegmentMap_RBTree::_SearchRB(fbl::RBTree_Node*&, 
std::pair<unsigned long, unsigned long>&) + 0x64

(500 more calls to fbl::SegmentMap_RBTree::_SearchRB omitted)