I will test for hair as well. I was performing hair tests before the previous one timed-out with the new version of VWD, and did not experience any issues.

Writers_Block, it could be environmental with your PC setup. I had an environmental hiccup with a pre-testing latest version of default VWD on my W7 x64 PC that was not there in my WindowsXP win32 laptop. That error message you see is what I was getting every time I clicked on anything, though the program still functioned properly (just an annoyance bug). Gérald was able to correct whatever the anomaly was before the official release went live.

What are your system specs? This might help to narrow down an issue if others have no errors, and the error lies with your environment. Philemot could then make possible changes to account for anomalies.