Taito Legends 2 (PS2): Ray Storm controller assignment bug

[Daniel W. Rouse Jr.]

There seems to be a Ray Storm controller assignment bug in Taito Legends 2
for the Playstation 2... but there are workarounds to get the game to start
after the bug occurs:

Steps to reproduce--
1. From the title selection screen, Select Ray Storm (press X).
2. Make a note of the default assignment for the Normal Attack and Special
Attack buttons.
3. Set the redundant Special Attack assignment of the Triangle button to Not
Used.
4. Select Game Start (press X).

Observed Behavior--
A message box appears: Special attack button is not assigned (OK).

Now, press X to acknowledge the message...

5. Set the Triangle button back to Special Attack
6. Select Game Start (press X)

Observed Behavior--
The same message box appears: Special attack button is not assigned (OK).

Workarounds--
1. Don't change the Triangle button assignment for Special Attack to Not
Used.
2. If the Triangle button was set to Normal Attack in step 3 (instead of Not
Used), then setting the button back to Special Attack in step 5 does not
cause the message to reappear after step 6.
3. Select Default Settings (press X), followed by selecting Yes (press X) to
get out of this bug situation and actually start the game if the Triangle
button was first set to Not Used.

Additional Notes--
This is the only controller assignment bug I have encountered among all of
the other games in the Taito Legends 2 collection of games so far.