To me it seems difficult not to say impossible to get FL up running under win7 as Quicktime won't install properly under Win7. I recieve error #2093 and as long QT wont run FL won't either.
( deinstalling & reinstalling QT several times as supposed from Apple's customer service does not resolve this)
Anyone else with the same issue?

Works fine for me under Win 7 64, except I can't drag and drop files onto First light. I have to open them explicitly.

Quicktime 7.6.2 and First Light both working fine here, under Win7 64-bit.

I expect you're already doing this but, if not - you need to install Cineform using the "run as administrator" option in Win7

to my knowledge win7 defaults "me" as administrator, and Prospect was installed as such.
Now - my issue is still not resolved. QT simply will NOT install properly on my new machine - this affects not only CF but also after effects ( qt dependent operations).
I guess I'll have to wait until QT updates to a "properly working" 64-bit release.

btw - have a look at this footage shot here in my neigbourhood (EX1 720p, sligthly colour corrected with FL --- before my qt probs :) Footage used in spinning cycle application

www.progresit.com/gims.wmv (30mb, appr 1min dur)

Supposedly, the release version of Windows 7 has native support for MOV files. We shall see in about a week.