problem in registerDT i have only 6u27 jre on my machine. make sure DT dll in system32 is 6u27 version. then install latest FX from deploy scrum install complete, but DT dll is not copied to system32 from the log: registerDT calling GetSystemDirectory OK Fail to open file create DT plugin reg OK create Deployment Toolkit CLSID reg key OK CLSID\{CAFEEFAC-DEC7-0000-0001-ABCDEFFEDCBA}\InProcServer32create Deployment Toolkit CLSID InProcServer32 reg key OK create Deployment Toolkit CLSID InProcServer32 ThreadingModel OK notice "Fail to open file" something is wrong in RegFX.cpp, function getFileVersion.