I looked through my trade skill mule hoping I'd have a ton of these, but I only had 7. 2 of which came from the brownie camp in Dragon Scale Hills and whatever in Fortress Mechanotus. One of the brownies was the Queen and I am pretty sure all of them were cleric types. I tried Bloody Kithicor, but after an hour of running around killing all the mobs listed here, I had zero Stained Fine Runic Charta Arcanum to show for it. So I tried Orcs in Lopping plains as well as Bloodmoon Keep and nada. Went back to Bloody Kith and killed for 2 hours, got 1 Charta Arcanum. I also had 2 of my boxes with pets sitting in Katta at a camp with "vortex of the deep" type mobs 24/7 for 2 days. Sure, they only killed 5-8 mobs per whatever respawn time, but it was constant and all that got me was 4 Charta Arcanum.
Of the 7 I had on my tradeskill mule, 5 of those came from Fortress Mechanotus for when I was doing Eron's quest, which didn't really take me that long. So I started just mass killing everything in Fortress and have gotten over 20 in maybe 3 hours of on again off again playtime. I pretty much pull every single thing (trash here don't summon) on each level and then rampage, then clean up whatever didn't die on rampage. I go solo with just a healer merc that I keep on passive till I pulled all I wanted. Might want to run around first setting up your advance loot for what you want and don't want if you mass kill.
I think the drop rate for these are slightly better in Fortress Mechanotus vs Bloody Kith, but what really helps is there are a ton of mobs and it's easy to pull a massive train of them and kill all at once. And I am not saying it only drops off cleric type mobs, but going off my logs, it looks like I only got these off cleric type mobs. Although once I started mass killing, the logs get kinda confusing for what was just killed before I looted a charta Arcanum.
This drops in Loping Plains off the orcs. Smudged and Sooty drops in old commonlands and bloddy kithicor etc.. smh. Dont go there and waste an hour trying to find it because you will not...
very wrong, stained drops from "an army of light" in Kithicor. Got one after 5 minutes. Before I killed a lot of orcs in loping plains and only got sooty and smudged.
I've slain a zillion "vortex's of the deep", and not one drop. They seem to drop papers....and sooty runic vellums...but NO Stained Fine Runic Chartas.....nada.
Fleven, I haven't been able to get my collector to work for so long :(
If you're having problems, post or email about them. Otherwise, try downloading it again and reinstalling. Also, if you do post or email, make sure to submit your system's specs (OS version, 32-bit or 64-bit, etc.).