Hi!
I have seen a problem with Robotstudio (RS) 6.04.01 that when i open a saved station RS finds a later unsaved version of the rapid code. The problem is that the code can be a hole days work and there for have been applyed to the VC and run in simulation? Have never seen it before in RS but this week i have got it every morning. And of course i save the station before i go home for the night 
and i use the Auto save function.
Yesterday RS couldn’t open my station because it was something wrong with the save, luckily I could still use my system in a new station.
Erik Hagman
AH-Automation