Not sure what is causing it. We also suspect the firewall. Probably it is just a glitch, the software unable to close the running process. It does not hurt. Your project are already stored at thta point. The only disadvantage is that you can not relaunch Liquid. So you have to reboot or close the process manually as described earlier.  

I'm sure it is the beer

Maybe this is something to try. It forces the application to use the Windows Mixer. It can fix some weird audio card problems. Note this involves editing the registry so this is at your own risk . Make always sure you have a backup in case something goed wrong.   1.       Type regedit in your Run ...

I got confirmation. 7.6 should work with Windows XP, Vista and MAC OS 10.5.6. Only 10.5.5 seems currentley to have problems with this Quicktime version.

The Quicktime version gives some confusion. As far as I know Quicktime 7.5.5 is the recommended version. 7.6 is only approved for MAC OS 10.5.6. But I'm checking this out and come back to you.

Yes, that is the Turbocache variant from ATI. That will give problems with HD in Liquid.

Just to be sure. The software you install is an upgrade to AL7 ? As the patch fill fix only that problem. If not and the error comes up after 30 days it might be that the software is not activated. Another reason could be that you have another Liquid installation with the same serialnumber in your network. This will lock out the software as well.

When this message is showing Liquid is shutting down the render engine. if it stays it probably crashed or unable to close the render engine. It will not give any problems with Liquid. But you might be unable to relaunch Liquid until you reboot the pc.  

That looks okay. Do you have this in all projects ? And with all movies ? or just some ?

They might show up but we do not support this. Installing codec packs sometimes interferes with the codecs installed by Liquid and can give problems with importing, exporting and rendering files.