Hi,After re-installing Ifly 737 sp 2.1 and Fs2crew 1.6, my Fs2crew main panel doesn't pop up by clicking Standby Altitude Indicator.I am sure that:~F1 registry repair tool has been run~Add Fs2crew by using ifly configuration tool (enable button control)Thanks for your help.TCC---------------------------------FS 9.1Vista (UAC turned-off)

Hi, Make sure you run the iFly Config Manager as an Admin. It sounds like the Config Manager never updated the panel.cfg file with the FS2Crew panel cfg entries. Best,

Hi,Run iFly Config Manager as and Admin "with FS2crew botton control checked" and press update, still failed. Panel.cfg was not updated.I found I should disable FS2crew botton control first,-->update-->exit, then run Config Manager again, enable botton control, press update. That would work.Thanks for your remind.TCC

Glad you got it sorted!Cheers,