So, i had only one lavarock and couldn't find another one. I've already cleared vendigroth, and all i needed was the last lavarock to complete the ancient gods quest. I searched throughout the topics, and found this http://www.gamebanshee.com/forums/arcanum-of-steamworks-and-magick-obscura-27/lava-rock-94188.html
and so i downloaded the file, unzipped it, and put the 2 met files in my rules folder. I turned on the game, advanced time, went in all shops, rebooted the computer, checked if all was right in the rules folder but nothing: i haven't been able to get another lavarock.
In my rules folder there is another file, that is that of the 126 level cap, but i don't think it could ever influence the other two met files. Any suggestion?