ahah

game/modules/tome/class/NPC.lua

@@ -560,13 +560,13 @@ function _M:addedToLevel(level, x, y)
 					local uid = self.uid
 					self:replaceWith(b)
 					self.uid = uid
-					self.desc = self.desc.."\n#CRIMSON#Well Raderak, you wanted them buffed. I did... but ONLY FOR YOU ! :) *CACKLES EVILY*\n-- yours truly, DarkGod#LAST#"
+					self.desc = (self.desc or "").."\n#CRIMSON#Well Raderak, you wanted them buffed. I did... but ONLY FOR YOU ! :) *CACKLES EVILY*\n-- yours truly, DarkGod#LAST#"
 				end
 			end
 			if self.type == "vermin" and self.subtype == "rodent" then
 				self.max_life = self.max_life * 20
 				self.life = self.life * 20
-				self.desc = self.desc.."\n#CRIMSON#Well Raderak, you wanted them buffed. I did... but ONLY FOR YOU ! :) *CACKLES EVILY*\n-- yours truly, DarkGod#LAST#"
+				self.desc = (self.desc or "").."\n#CRIMSON#Well Raderak, you wanted them buffed. I did... but ONLY FOR YOU ! :) *CACKLES EVILY*\n-- yours truly, DarkGod#LAST#"
 			end
 		end
 	end