Explanation: The dbstop.exe utility was unable to stop the Foxhound database because it couldn't connect to the database. This usually means Foxhound wasn't running in the first place, and in that case this message can be safely ignored.

Here's a sample of this error message from the post_setup_trace.txt file:

Fri 12/31/2010  7:59:42.59 Foxhound 1.3806 *** dbstop 1 old_foxhound1 ERRORLEVEL = 9 
SQL Anywhere Stop Server Utility Version 11.0.1.2467
Unable to stop database server -- Database server not found.

See also...
How do I figure out what went wrong during an installation?