i have tried and searched extensively about my problem and yet to have any development on the matter. I have the dlc lost and damed extension to GTA4 and when i go to play the game it never loads the lost and damned dlc it only loads GTA4 and with the 1.06 patch the game just never loads at all. Was just wondering if anyone had the same trouble and if theres a fix. Thanks. I am running a backup of GTA4 not the disk.

never mind i found the answer to my prob
the answer was i need the actual backup of the complete gta4 ed. the one with all three games

hope this helps someone else