Thanks for your quick answer!
I have two files named FSUIPC4 in my FSX modules folder, and as you say, my windows must be set to hide the real filenames, so here is the one which is shown as a text file :
********* FSUIPC4, Version 4.60a by Pete Dowson *********
Reading options from "C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\Modules\FSUIPC4.ini"
NOTE: SimConnect Acc/SP2 Oct07 is supported, but it isn't installed.
Trying to connect to SimConnect SP1 May07 ...
User Name=""
User Addr=""
FSUIPC4 not user registered
WIDEFS7 not user registered, or expired
Running inside FSX on Windows 7 (using SimConnect SP1 May07)
Module base=61000000
Wind smoothing fix is fully installed
DebugStatus=0
93 System time = 22/04/2010 18:50:11
93 FLT UNC path = "\\PC-AURÉLIEN\Users\Aurélien\Documents\Fichiers Flight Simulator X\"
93 FS UNC path = "C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\"
1076 LogOptions=00000000 00000001
1092 SimConnect_Open succeeded: waiting to check version okay
5070 Exception 5 "VERSION_MISMATCH", Ref 0, Version 0.60905: Open: SimConnect Version incorrect!
5070 Trying another version of SimConnect ...
5163 Trying to connect to SimConnect Original ...
5179 Now running with SimConnect Original
5179 SimConnect_Open succeeded: waiting to check version okay
5179 Exception 5 "VERSION_MISMATCH", Ref 0, Version 0.60905: Open: SimConnect Version incorrect!
5179 Trying another version of SimConnect ...
13307 System time = 22/04/2010 18:50:24
13307 *** FSUIPC log file being closed
Memory managed: 2 Allocs, 2 Freed
********* FSUIPC Log file closed ***********
Hope you can find something inside :-)
Apparently, it says that I have an incorrect SimConnect version. I'm sorry to look like I don't know a lot about what I'm talking about, but is this so-called "SimConnect" a software which I needed to download and install first? or is it already included in fsx, and maybe just needs to be updated?
I'm gonna try and see that point while waiting for your answer!
Thanks
PS : sorry if my english looks strange sometimes, but I'm french and it's the first time I'm talking about technical stuff in english :-)