The antivirus and anti-malware software on the test computer blocked the installation of System Surveillance Pro for either of the two installation methods so it had to be turned off. The Internet/Online Installation method downloads a small executable which polls needed files from the vendor's server, whereas the Network/Offline Installation method involves a reusable, complete and slightly bigger installation source file.
It was necessary to contact the vendor’s support as some components didn’t register correctly. They responded within 30 minutes, and their instructions were to the point. When the install was re-initiated the Internet/Online Installation modus was again chosen, but this time the software was blocked by Windows Vista. After right-clicking the Vista pop-up alert and selecting run blocked program --> GPS System Surveillance Pro I was finally able to install System Surveillance Pro 5.5 as follows:
The welcome screen leads over to the EULA, and you can then change the installation path. After clicking Next the software started the installation and downloaded the required files quickly. When the installation finishes System Surveillance Pro places an instruction file in HTML form onto your desktop, but I suggest you first restart the computer and then read the file – on the Vista based test system the software only worked correctly after the reboot.