Hello Miguel,
A file, "ldraw.xml", defines matching parts between LDraw and LDD worlds. Unfortunately the one provided with LDD is soon outdated. An updated file is available ldraw.xml here. This file is to be placed in LDD program folder. The good news is that your exported robot is complete when exported with the updated file! (LDR attached)
Otherwise, I think you'll find more LDD experts in this Eurobricks forum.
Good luck with your simulator
A file, "ldraw.xml", defines matching parts between LDraw and LDD worlds. Unfortunately the one provided with LDD is soon outdated. An updated file is available ldraw.xml here. This file is to be placed in LDD program folder. The good news is that your exported robot is complete when exported with the updated file! (LDR attached)
Otherwise, I think you'll find more LDD experts in this Eurobricks forum.
Good luck with your simulator