cannot log avc or play clips

[l'enregistreur]

Hi everyone!

I am experiencing big troubles trying to open my compositions in 3.3.
After succeding to make the prog work (quite) ok on my brand new system, here we go again with some uncommon troubleshoot:
To that point, I can't load any of my comps.Only this great great demo opens.
After tryig out evreything I could in my range of knowledge, I updated my Nvidia driver and even desinstall my firewalls just in case that'd be a conflict issue...No results.
So now, to make it short, I can't play any of my clips(that were totally ok before and wellcompressed).
The traditional drag and drop just don't work.Even the prewiew doesn't display anything.

all suggestions are welcome!
thx in advance.

[Joris]

Sounds to me like you're using a codec which is not installed on your new system. What codec are you using for your 'wellcompressed' clips, and do you have Quicktime installed?

[l'enregistreur]

Quicktime is installed and I am using DXV and photojpeg quicktime clips.
Thanks for your help;)