Answer: This is a generic error message produced by the dbspawn.exe utility when the Foxhound database fails to start properly because dbeng11.exe has detected some problem. To determine what the real problem is, try using one of the "debug" shortcuts to start the Foxhound engine:

All Programs - Foxhound1 - Tools - Start Foxhound via Firefox - debug

All Programs - Foxhound1 - Tools - Start Foxhound via IE - debug

C:\ProgramData\RisingRoad\Foxhound1>ECHO OFF
Stopping the Foxhound engine if it is running...
SQL Anywhere Stop Server Utility Version 11.0.1.2276
Starting the Foxhound engine...
SQL Anywhere Start Server In Background Utility Version 11.0.1.2276
DBSPAWN ERROR:  -81
Invalid database server command line
******************************************************************
*** ERROR ********************************************************
*** dbspawn/dbeng11 set ERRORLEVEL = 1
*** To display startup diagnostics,
Press any key to continue . . .
04/23 06:39:58. Can't open Message window log file: foxhound1_debug.txt
Press any key to continue . . .

See also...
Can't open Message window log file: foxhound1_debug.txt