Playing on PS3.

Oreyn gives me the mission to find the missing guildies but he marks my quest at the wrong place. He marks the Forsaken Cave on the map, but the red/green arrow leads me to Leyawins' stables instead. I tried to talk to both NPCs living there, tried to see if the corpse of the dude I'mn searching for was on the roof, went to the caves, killed every trolls, couldn't find his corpse yet I saw all the other dead bodies. There's no way I can update this quest and finish the Fighter's Guild questline and it pisses me off. I'll try another character later to see if this quest is still bugged. But meanwhile, I find it odd that it's the first quest I couldn't finish due to some silly bug.

Edouard and Viranus are only placed in Forsaken Mine when the quest gets started, so it appear that you managed to bypass the stage of the quest where their corpses are enabled. What entries do you have for that quest in your journal? If you don't have the one that says "I have been told to report to Modryn Oreyn for assigned duties" then you might have to reload at the end of the prior request in order to get it. What I don't understand is how you can get the dialog with Oreyn that tells you about the quest without going through it, but that looks like the only way you'd be missing the corpses.