I tried to download C7.0.4 update once again but still crashes when it reaches the files decompression 
I have 7.0.2 installed, ideas ? anyone ?
thanks
You could use e.g. 7-zip to extract just the 64-bit installer (.msp) and run that. If you still have a problem Iād suggest you test you RAM.
it worked ! thanks MrSoundman 