Hi Pete,
Using FSUIPC 5.113 in P3d 4.0.28.21686.
There seems to be a possible bug in FSUIPC positioning of the green message window (used for ATIS etc). Each time P3d is run and the message window opened it's positioned further down the screen.
I see the location is held in the FSUIPC.ini, and this value is changed when P3d is exited. Here's the relevant part from 3 successive runs:
[Window.Message Window]
Docked=186, 1798, 15850, 261
Undocked=8, 661, 1894, 78
[Window.Message Window]
Docked=304, 2720, 15833, 261
Undocked=8, 661, 1894, 78
[Window.Message Window]
Docked=423, 3642, 15816, 261
Undocked=8, 661, 1894, 78
Each time P3d was run and the ATIS window opened, then the sim was exited. If I run P3d without opening the ATIS (or anything that uses that window) then there is no change to the entries in the .ini.