Have you manually gone to Windows Update and ensured you have all of the hidden and non-critical updates, which don't install automatically, as well as the latest version of Quicktime?
Do you have any professional (CSx) Adobe software on your system?
Please restart your machine and try again.You should be able to install.
If a reboot, after turning OFF the Adobe modules, does not allow the installation, then go to Start>Run and type "MSCONFIG," without the quotation marks. Look in the Services and Startup Tabs, to see if either/both of those are called at bootup. If so, uncheck them, and Reboot, when prompted. You will get a pop-up on Reboot, but just click out of that, letting the computer boot up, without those modules. Install (turn OFF all anti-virus, anti-malware, anti-etc. programs), and then on Reboot, from that pop-up, go back and check those modules, then Reboot. When you get the pop-up again, check Do Not Show This Again (or very similar syntax).
Good luck, and please report your success.
Thanks for your reply, sorry I should have reported back earlier. After carrying out Steve's suggestion, the install worked fine, so i'm up and running.