That's exactly what's happening. WebKit caches files like this by default. What allan should do is invalidate the cache each time he refreshes the Web Preview.
And as for detecting updates to the CSS file and refreshing the web preview automatically, that's a bit more complicated. I'm not sure if that should even be attempted.
On Jan 8, 2006, at 7:17 PM, Eric O'Brien wrote:
It is as if Web Preview has CACHED the CSS file and is using the cached version, rather than the current version, when it parses (or whatever) the HTML file for preview.