Even though I normally use Win7 Explorer for zips (I drag n drop to runtime), I also have 7zip v9.20 and tried that.

No go.

Still waiting for a regular zip file. Unless and until a free solution is available (and trials don't count) I think this is non-starter for Renderosity. I understand very well the reason to want this because of savings in bandwidth and storage. But it should just be a matter of time until a solultion becomes available.

Meanwhile....