Jailbroken PW4; managed to bork up KUAL access, seeing "application error"

I found a way to break things :P

I was trying to fix kual not seeming to pickup new extensions I had put in the extensions directory and so I;

1) Tried updating via putting Update_KUALBooklet_hotfix_v2.7.23_install.bin
in /mnt/us/mrpackages ;; then ran log; mrpi
2) That didn't seem to work so I ran the Update_KUALBooklet_v2.7.23_uninstall.bin via mrpi. This resulted in a KUAL booklet staying.
3) I tried installing (step #1) again, and this seemed to work but I don't see any new kual.cfg in /mnt/us/extensions and when I click the booklet I see "Application Error"
4) I read some other threads which recommended reinstalling the jailbreak, so I did that, then did step #1 again ( Update_jailbreak_hotfix_1.16.N_install.bin via update your kindle menu option), but with the same result when I click on KUAL, namely, "Application Error".

Not sure where to proceed from here?

Paperwhite 4; first 4 serial #: G000. Firmware 5.11.1

I wonder if the KUAL entry that is sitting there is the old one and the new one is just not appearing for some reason?