salgaf

Problem solved :) I have deleteted fs9.cfg in my Documents & Settings folders, restarting fs as default parameters everything work well. Maybe was some corrupted parameter in cfg file. Thank u for the support. salgaf

Thank u for the answer Pete To solve the problem I have removed every add-on , unistalled FS and deleted FS 9 folder from my HD. Reinstalled FS again without any Add-On everything goes well. Installing only IvaP that put FSUIPC 3.4.8 with my surprise the problem appear again :( The only thing that I have noted is that every FS setup configuaration parameters has been saved from the previous installation. It's possible that something stored in the System regitry still cause the problem? Hoping that u can understand my "spaghetti" English Regards salgaf

Hi, After installaing FSUIPC the AP of every Aircraft when reach the selected ALT is unable to stabilize and start to go Up and Down changing V/S +/- For Example on the LyarJet 45 the V/S change from +550/-550 in a never ending loop. Removing FSUIPC the problem never happen Any Idea ! Sorry for my bad English..... Thank You