Hi Mark, well, I definately give up. Yesterday I flew with the new gauge from the F-35 as suggested. Closed P3D and, while reopening, again popped up the fatal message "Your pc has ran out etc. etc..". I know that any single pc has some weird behavior of its own; I experienced this reading about issues, in different forums, that never occurred to me. So, in this case, I accept that for some mysterius reason, some parameter of this beautiful B-52 causes this damage to my sim. I'll wait for an update, even if I fear long awaitings; I really don't know what else to do. Thanks for your help, Mark.