Thanks for the response, but I had already tried that.
I actually did find out what was wrong, just in case anyone else has this problem.
There were a couple of typo's in the configuration file. It was just a coincidence that both sites were wordpress blogs in the root directory. In one, I had an additional double quotation mark in one line that was messing everything up, in the second, I found that I had edited the log file format in the example, which was commented, leaving the default one. Stupid I know.
The way I figured out the second problem was by running the awstats.pl file from the command line. That tool reports errors pretty well.
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