[capt 757 and pmdg 747 with the FSUIPC4 4.53]

There's no way merely installing FSUIPC will affect an add-on aircraft which doesn't use it. You have to actually register the installed FSUIPC and set options in it, such as assigning and calibrating controls -- otherwise it isn't doing anything except at the behest of programs using it.

If you have registered it and used it for your aircraft controls then it is likely that the settings you have made suit the 757 but not the 747, in which case you need to use the aircraft-specific settings or try the Profiles facilities, so that FSUIPC automatically makes different settings for different aircraft.

Incidentally, version 4.53 is now out of date. The currently supported version is 4.57 (with an interim update for that also available).

Regards

Pete

Hi Pete, thanks for your answer. I don't have the registered FSUIPC, it was installed by CS products that I have, then I will continue searching the forums. I've read many topics with the same problem in other forums, but no solution... PMDG and CS guys don't say nothing, except that their products are perfect. Is for this reason I hoped that this was the problem... but after your answer I know that the problem is another one, and more complex. If I can't find a solution, I believe that I will uninstall FSX, and all the addons I bought, and throw all to the garbage... and forget it forever. I'm so tired.

Regards

Gerard

[capt 757 and pmdg 747 with the FSUIPC4 4.53]

Hi, I have exactly the same problem: PMDG 747 working perfect, installed CS 757 and the problems with autopilot begun. Solved the problem with CS 757 after installing FSUIPC 4.53 but PMDG 747 continues with the problem...