They patched it so he would not enter combat as soon as you enter Last Light for the first time even if you load an older save that was made while the bug was active. This does not however resurrect him if he was already dead thanks to the bug. I don't know when you made your savegame, but apparantly Dammon was already dead when you saved. So you will have to load a savegame from before you enter Last Light for the first time.
