The cover grid works on XP SP3.
But I noticed something else strange happened.
I see a note that there is a Plugin update (there was none in main 42)
Launching that, It informs me that the Kindle collections is depecated.
So I uninstall as recommended.
Visiting the MR Index, the PI is still listed as active, so I use preferences to install it.
Same message update on restart
There is something about that PI as I have 16 others installed