I dont think there are issues per say, other than that it is the longest attraction Disney has ever done, and its trackless, with multiple floors, I suspect just getting everything in sync and the on site programing is taking time. Yes they pre program these rides based off of specs for the ride before its built, but once a ride is built there are always things that may have been installed a bit different then the preprogram so there are issues that need to be worked out. I dont think its anything large other than the ride is just a bit different then any other trackless system they have installed before