The default installation directory for Derby has a space in it. Here, it came out as "javadb 10.5.3.0". There is a bug in (at least) the dblook script that cannot handle this space.
$ ../javadb\ 10.5.3.0/bin/dblook -d MinuteMan
../javadb 10.5.3.0/bin/dblook: line 26: /Users/millerti/javadb: No such file or directory
This is on line 26 of the dblook script:
Where $DERBY_HOME is used, there needs to be quotation marks, like this:
If I add those, the tool starts up.