FMC glitch and VNAV

Hi allTonight I prepared a flight from EKCH, COpenhagen to LGSM, Samos. Of course I wanted to test my new baby.Everything prepared. FMC programmed, no errors, flightplan looked good, no DISCO. Take off RWY22R. LNAV preselected and push that TO button!Flying on the F/D manually. ATC gave me direct SIMEG. Ok, I found SIMEG in the LEGS page and entered it in the scratchpad. Went back to LEGS page 1 and pressed LSK1. And something went really wrong.http://forums.avsim.com/user_files/24120.jpg http://forums.avsim.com/user_files/24121.jpgOh well. Everything seemed fine on the CDU so I engaged the A/P in VNAV and LNAV. And my passengers got a hair raising roller coaster ride. I managed to save it before we hit the bottom though.http://forums.avsim.com/user_files/24122.jpgContinuing, on manual, no A/P. After some distance I tried to engage VNAV again and now everything went fine. No roller coaster ride. Just a little perculiar thing on the ND.http://forums.avsim.com/user_files/24137.jpgWell. After half an hour we got a black out in the neighbourhood so that flight was down the drain anyway. ;-)Hope you can sort something out from the pictures though. That's the main reason why I post.Best regards,