application crashing in c4_DWordArray::GetAt(int)

Application is crashing in c4_Allocator::Locate(). In locate function c4_DWordArray::GetAt(int)is failing and application crashing on Windows Server 2008. It is working file on lesser platform. Here is the stack trace - metakit29_t.dll!c4_Allocator::Locate(long pos=1) Line 253 C++ metakit29_t.dll!c4_Allocator::Occupy(long pos_=1, long len_=7) Line 197 C++ metakit29_t.dll!c4_SaveContext::SaveIt(c4_HandlerSeq & root_={...}, c4_Allocator * * spacePtr_=0x004980c8, c4_Bytes & rootWalk_={...}) Line 619 C++ metakit29_t.dll!c4_Persist::Commit(bool full_=false) Line 972 C++ metakit29_t.dll!c4_Storage::Commit(bool full_=false) Line 395 + 0x22 bytes C++ dsstore_t.dll!Ds_Storage::commit() Line 2892 C++