In Unicode builds of CSummInfo::IncrRevNum() the update TCHAR (which is wchar_t for Unicde) buffer gets written as type VT_LPSTR, which always expects a char*

BOOL CSummInfo::IncrRevNum() { ULONG count; _stscanf_s((LPCTSTR)GetRevNum(), _T("%lu"), &count); count++; TCHAR buff[20]; _stprintf_s(buff, 20, _T("%lu"), count); return m_pSection->Set(PIDSI_REVNUMBER, (void*)buff, VT_LPSTR); }

this can be fixed be replacing the last line of the function by

`return m_pSection->Set(PID_REVNUMBER, (void*)tcstocs(buff), VT_LPSTR);`

NB: tcstocs is defined at the top of the summinfo.cpp