Answer: Use the ODBC Administrator link to check the ODBC DSN for a problem like this:

The "Database file:" field is filled in and "Start database automatically" is checked, but the database is already running. If your ODBC DSN specifies different "Server name" and/or "Database name" values than the ones already in use, it will try to start the same database file a second time, and that is not allowed.

C:\ProgramData\RisingRoad\Foxhound1>ECHO OFF
A subdirectory or file backup already exists.
*** Ignore "A subdirectory or file backup already exists."
The system cannot find the file specified.
*** Ignore "The system cannot find the file specified."
*** Foxhound backup started
*** Starting dbeng11 if necessary...
SQL Anywhere Start Server In Background Utility Version 11.0.1.2276
DBSPAWN ERROR:  -816
Specified database file already in use
*** Ignore "Specified database file already in use"
*** Starting dbbackup...
SQL Anywhere Backup Utility Version 11.0.1.2276
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