Hi,
I get the same error.
Have set browser ID to:
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
but still get this error!

10:42:44 Warning:  File not parsed, looks like binary:
www.flightsimbooks.com/robots.txt
10:42:44 Warning:  File not parsed, looks like binary:
www.flightsimbooks.com/learning/index.php
10:42:44 Error:  "Open error when decompressing" (-1) at link
www.flightsimbooks.com/learning/index.php (from primary/primary)
10:42:44 Info:  No data seems to have been transfered during this session! :
restoring previous one!


/frans