The TokenTalk NB Card User Confidence Test cannot run on any Macintosh that
requires system software version 6.0.4 or later because of a code conflict
problem. The Confidence Test ships with version 6.0.3 and was designed to
start up as a diagnostic.
If you copy the test to a startup disk or a Macintosh hard drive running
version 6.0.4 or later, the system software loads the test code incorrectly
into system RAM. The upshot of this is that the test either fails the card or
hangs the Macintosh in the process of running the test.
Users should run the test only on a Macintosh that can start up the test disk.
There is no other workaround.