As many bugfixes as I could cram into here.

code/modules/DetectiveWork/detective_work.dm

@@ -238,9 +238,8 @@ obj/machinery/computer/forensic_scanning
 						var/list/blood = outputs[3]
 						if(blood && blood.len)
 							temp += "&nbsp<b>Blood:</b><br>"
-							for(var/j = 1, j <= blood.len, j++)
-								var/list/templist2 = blood[j]
-								temp += "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Type: [templist2[2]], DNA: [templist2[1]]<br>"
+							for(var/named in blood)
+								temp += "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Type: [blood[named]], DNA: [named]<br>"
 					temp += "<br><a href='?src=\ref[src];operation=database;delete_record=[href_list["identifier"]]'>{Delete this Dossier}</a>"
 					temp += "<br><a href='?src=\ref[src];operation=databaseprint;identifier=[href_list["identifier"]]'>{Print}</a>"
 				else

code/modules/chemical/Chemistry-Tools.dm

@@ -185,9 +185,10 @@
 							if(W:amount >= 1)
 								playsound(src.loc, 'Deconstruct.ogg', 50, 1)
 								if(do_after(user, 20))
-									W:use(1)
-									user << "\blue You put in the glass lens."
-									src.state = 5
+									if(W)
+										W:use(1)
+										user << "\blue You put in the glass lens."
+										src.state = 5
 					if(5)
 						if(istype(W, /obj/item/weapon/crowbar))
 							playsound(src.loc, 'Crowbar.ogg', 50, 1)

code/modules/mob/transform_procs.dm

@@ -23,7 +23,7 @@
 	del(O.organs)
 	O.organs = organs
 	for(var/name in O.organs)
-		var/datum/organ/external/organ = O[name]
+		var/datum/organ/external/organ = O.organs[name]
 		organ.owner = O
 		for(var/obj/item/weapon/implant/implant in organ.implant)
 			implant.imp_in = O

code/modules/power/cell.dm

@@ -30,7 +30,9 @@
 		overlays += image('power.dmi', "cell-o1")
 
 /obj/item/weapon/cell/proc/percent()		// return % charge of cell
-	return 100.0*charge/maxcharge
+	if(maxcharge)
+		return 100.0*charge/maxcharge
+	return 0
 
 // use power from a cell
 /obj/item/weapon/cell/proc/use(var/amount)