Update: I tried to download the installer again from FSX system and execute the installer. It still fail, the error message is like attached file "IMG_0299.JPG".
Is it possible other problem? Please help to solve this problem, because it seems like all FSDreamTeam addon which I bought are not work now.
It's not a problem of the installer, it seems that, while the installer is running, SOMETHING ELSE is removing files that are going to be installed, or blocking access to the target installation folder, and that look exactly like what a bugged antivirus might try to do.
Also, from which location you run the installer from ? Are you trying to run from a network drive or a removable drive ? That might not work, so run the installer from a fixed drive.
Another possible reason is that you are running out of space on your system drive WHILE the installer is running. Before being able to copy files, an installer (any installer) will first decompress ALL its files on a temporary folder, and that usually stays on your system drive (the one Windows boots from) so, even if you start the installer from a drive that has plenty of space left, and your FSX is installed on a drive that has plenty of space left, the installer will STILL need enough space on your system drive in order to decompress itself, so you must be sure you are not running too low of available space on the system drive.