Problem with loading saved flight - BYPASS between all fixes, and freez

Hi, I have a strange problem after loading my saved flight.I saved while cruising at fl340, with LNAV and VNAV engaged. AP, AT on. All normal.After reloading flight two days after I noticed that on ND there is no magenta line between waypoints, and on LEGS page in CDU there is "BYPASS" showing after each point.I tried going direct to my present target waypoint (selecting it and entering in first line again) - it removes all bypass'es and connects all waypoints on ND, but it also removes all speeds and altitudes from all wp's - so just after that vnav disconnects.I tried to change cruise fl in CRZ page, but when I enter it sim freezes and needs to be restarted (whole FSX doesn't respond). I tried restarting my PC, but everything happens in the same way, so it seems to be replacable. I have not observe any freezes before - everything has worked always fine. I also used saving/loading quite many times with no problems at all. Fantastic plane.My pc: AMD Pnenom II x4 3.0GHz, 4GB ram, GF460gtx, Win7 eng 64bit.I also use ASE, REX, UEX, GEX Europe.