Adobe Premier Pro: "Unknown Erorr!" Exporting WMV

[BassPig]

I've done this scores of times without this error, but today I'm getting the "Unknown Error!" pop up dialog when just a few seconds into the second pass encoding Windows Media 9 format from Premiere Pro 1.5.

I remember getting a similar error many years ago in either Premiere 6.5 or earlier, when exporting WMV files, and there was something I did to fix the problem. However, I cannot recall what it was.

The peculiar thing is that I encode WMV files from PPro routinely without a problem. Just tonight things are acting strange. Maybe it's the content of the video? I shot some video of a stray cat that wandered into the house yesterday. Maybe the cat is too furry and there are too many different colored pixels for the WM Encoder to handle? It doesn't do this with other footage I have shot and exported. But I haven't videotaped furry animals recently, but this is the only thing that's different about the content.

It's a frustrating error, because I have to wait a long time for the end of the first pass before the error occurs. I leave the room while it does it's thing and come back later to this error. So then I babysat the thing to find out when the error occurs. On the beginning of the second pass. But I can't recall what the heck the solution to the problem was back in 2001 when I last had this type of error!

Any Adobe Premiere Pro users run into this before? If so, have you found the cause?