Hi Richard,
From the install log you provided it looks as though you specified MDB as the DB name.
[InstallerLog] [logDbInputs:308] - Database Name-mdb
This will not work. Jasper Server requires it's own database and the installer will create it for you as part of the installation process. Most customers specify jaspersoft as the DB name.
The DISK SPACE error you are seeing might just be a red herring as a result of the DB connection failures. Can you correct the properties file and specify jaspersoft as the DB name and re-run the installation and let us know how it goes?
Regards,
Steve