Damage from thrown rocks is listed as 2d6 + 10, not 2d6 + 10 + 2d6 fire as listed in the MM
I discovered this on Windows XP
Completed: At revision: 12865 – 5.16
Resolution - I left the 'Thrown Rock' in place to prevent any breakage; however, I added a few new Rocks for the Giants; including the Fire giant, which now has a +2d6 Fire damage in the Special Properties. I also made it so the Rocks don't have Attack Iterations. These are automatically added to newly created Giants or may be grabbed in the equipment list.
Checked and confirmed fixed.