Message: Setup error: DIAG yyyy-mm-dd hh:nn:ss.sss ...
Something has gone wrong during the post-setup process of a Foxhound installation.
If the full text of the "Setup error:" message doesn't help, have a look at the post_setup_trace.txt file;
see How do I figure out what went wrong during an installation?
Even if the installation has replaced the old copy of your Foxhound database with a new one, you can start over again as follows:
Run the Foxhound "Unsetup" process
(see How do I run the Foxhound "unsetup" process?),
restore the old copies of the foxhound5.db and foxhound5.log files from the
C:\ProgramData\RisingRoad\Foxhound5\backup\previous_build folder to the
C:\ProgramData\RisingRoad\Foxhound5 folder, and
run the Foxhound Installshield setup again.