This Access Violation exception happens on all applications generated from MFC app wizard of Visual Studio. This crash occurs on all versions of Windows7 (not only Japanese Windows7). The root cause is due to the change of Shell Alloc in Windows7. Previously SHAlloc was being used in earlier OS, but it switched to call IMalloc interface in Windows 7.
Install DevPartner version 9.1 Web Sync 1 or higher.