I've completed this quest multiple times since purchasing skyrim for the 360 back in November.
I've found that the best way to avoid the cloning Louis Letrush glitch is as follows...
After stealing Frost from the Black Briar Cabin in 'Promises to Keep' quest, follow your quest marker and return to our friend Louis. Once you see him in the wilderness get off frost and open the dialogue screen with Letrush... Select the 'If kill you I can keep frost' dialogue option, the conversation terminates and then simply kill Letrush on the spot there and then... The quest completes and frost is yours, and more importantly there will no Letrush clones outside Whiterun or anywhere else for that matter...
Really hope this helps for future playthroughs, if anyone is interested I also have completed multiple playthroughs for those troublesome 'Blood on the Ice' and 'In My Time Of Need' quests which can lead to troublesome glitches in the gameworld later in the game!. If newer players need help then simply message me here on the forums and I'll do my best help
Cheers Glenneth
I've found that the best way to avoid the cloning Louis Letrush glitch is as follows...
After stealing Frost from the Black Briar Cabin in 'Promises to Keep' quest, follow your quest marker and return to our friend Louis. Once you see him in the wilderness get off frost and open the dialogue screen with Letrush... Select the 'If kill you I can keep frost' dialogue option, the conversation terminates and then simply kill Letrush on the spot there and then... The quest completes and frost is yours, and more importantly there will no Letrush clones outside Whiterun or anywhere else for that matter...
Really hope this helps for future playthroughs, if anyone is interested I also have completed multiple playthroughs for those troublesome 'Blood on the Ice' and 'In My Time Of Need' quests which can lead to troublesome glitches in the gameworld later in the game!. If newer players need help then simply message me here on the forums and I'll do my best help

Cheers Glenneth

