Hey guys, I've flown the airplane on 4 or 5 route successfully. I've tried to fly LEMD-EHEH. I set up a SID and a STAR. When I try and join them and activate the flight plan...I lose the data in the FMC/CDU and it becomes basically inoperable thereafter. I've tried about 3 times now to complete this route. Time before last I got to about 2,000 feet out of LEMD, had a valid TCAS alert, and then noticed that the data was gone in the FMC again. This lead me to re-install Windows 7 and FSX. The NGX, NL2000 scenery, and Aerosoft's LEMD are all that I am running at the moment. I'm thinking maybe something is corrupted with the EHEH nav-data? I've attached a picture so you can see how the data just disappears in the CDU. This is similar for all pages, PERF, RTE, LEGS, etc. Any ideas?

thats exactly what u get now on every flight i do im entering my routes for the departure and it just all goes really weird please pmdg help!!!!!