Bukkit version:
1.2.5 Recommended Build

Plugin version:
R: 8.3.5 for CB 1.2.3-R0.2 Mar 28, 2012
AND
R: 9.0.2 for 1.2.5 1 hour ago

So here's what happened, for the longest time running 8.3.5 of PreciousStones on Bukkit 1.2.5 Recommended Build worked perfectly, then recently for some reason our PreciousStones config reset, I fixed it, then people had to break and replace all their blocks, but before getting them to do that I updated to version 9.0.2 of PreciousStones hoping that wouldn't happen again in the future, but then some users were having trouble with /ps visualize crashing their clients, not sure why this is happening, no errors appear in the console, we just get blue screens on Minecraft, as if you're looking into the sky.

Do you know what happened?
How can I fix this?

Any help with this?
I figured this was the place to post if you needed help, rather than posting a comment on the plugin page.

Somepeoples computers are slow and they cant handle it. You can try tweaking the visualize settings, other than that theres nothing much that can be done.