Problem: IFR suddenly ends - no handover to center

[Guest kingnothing]

Hi,recently I've faced the problem that whenever I'm in IFR, the Departure controller just won't hand me over to Center, no matter how high and far away I am. And then all of a sudden the ATC window shows nothing but the "Nearest airports" option and I'm in VFR. Actually, there's not even a message that the radar service is terminated, nothing - it simply ends at a point.Has anybody an idea how this can be or even more important - how I could fix that?I have no Add-ons installed except FSUIPC4 and made no changes recently.Thanks in advance

[Virtualwombat 4]

Have you changed the ATC window display settings from the default (automatic display)? There is a well-known bug in FSX that stops ATC responding after a period of time if you try to change the ATC window settings. Maybe this is what you are experiencing?Cheers,Noel.

[Guest kingnothing]

It's always been on automatic display. And basically everything works perfectly fine with ATC until I reach FL 180, then I hear nothing, no handover, no new instructions, only messages exchanged with AI planes. And when I leave the area it falls totally silent.

[RFields5421 1]

Zip and attach a flight plan you use which consistently has this issue.I've never heard of anyone having this problem - so it is probably related to a specific area or set of ATC boundaries.

[Guest kingnothing]

Occured on the last three routes I flew (see zip)LIMC, KMEM and EDDK, all airports I have departed from before

[Guest kingnothing]

I just found that I had accidentially removed the bvcf.bgl and lak.bgl when deleting AI flight plans -.-Lukily I still had them so I restored them and everything works fine again!Thanks for your help