Hi Umberto, thanks a lot for quick reply
Even I act according your suggestions it is not working. I receive the message: Essellerate engine ERROR code 0x e0010004. no engine is installed. (what is this "engine"??)
Then after I opened the AddonManager it says:
Product installed in TRIAL mode, then I try to reinstall and nothing happens.
Anyhow, strange enough: I have started the FSX in Zurich and have seen all fsdt LSZH buildings, then after take off, all have disapperead...
Best regards
Alfred