Error, missing iLok authorization for Pro Tools 9

[Martin11]

Hey,

I've seen this problem mentioned a few times on here but just wondered if I was doing something wrong that hadn't been mentioned. I cannot under any circumstances get Pro Tools 9 to launch because of this:

'Error, missing iLok authorization for 'Pro Tools 9'. Please insert the necessary iLok and restart Pro Tools'.

I'm running on Windows 7 on a HP PC.
I've recently installed the Pro Tools 9 crossgrade for students (previously had Pro Tools LE8).
Being a crossgrade, I had to buy an ilok2 seperately.
I've registered with ilok.com and successfully downloaded my license.
I've installed the driver and client software from ilok.com.
I've installed the Windows driver from PACE.
I have also downloaded Pro Tools 9.0.02 and then 9.0.05 as suggested in my downloads in my Avid account.
I have an M-Box2 and entered the correct code when asked.
My ilok account says I have the Pro Tools license from digidesign and the expiration says 'never'.
The blue light is on the ilok and i've tried it in all my USB ports even after altering the USB power options as suggested in another thread.

I have been trying everything possible for 5 days now and i'm 100% confident I did all that was asked during installation. The only suggested solution which I haven't tried is to spend yet more money and buy an iLok 1 which appears to be more compatible. As they are discontinued, this is an expensive and time consuming task.

Does anybody know of anything I can try that doesn't involve throwing more money away just to get the software working which I purchased a week ago?????