Hi ncngrr, I encountered the same problem and I modified my registry and went through the exact procedure you did. However when it came to installing FSUIPC4 (it was a licensed version), it could install but wouldn't activate it because it couldn't find the FSX_SE config file and couldnt edit my dll.xml (my log attached). Of course I no longer had the file because in order to install orbx I had to modify the registry and rename the file from FSX_SE to just FSX (I fontknow whe but they were the instructions provided in the orbx forum!).
I found a workaround but Im not sure if it is a permanent fix. I went into my FSX folder and renamed it to FSX-SE and then renamed my fsx.cfg file to fsx_se.cfg. I was then able to active FSUIPC4.
FSX-SE will try to write a new fsx.cfg file. I simply renamed the new fsx.cfg to fsxcopy.cfg (just in case I messed up and needed it again) and renamed the fsx_se.cfg file back to fsx.cfg. Works great now.
Im sure Pete will have a more elegant solution but for now it has solved my problem... hope this helps.
Installer for FSUIPC4.DLL version 4.939
Looking in registry for FSX install path: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Games\Flight Simulator\10.0 Parameter"SetupPath" ... >>> OK! FOUND FSX! <<< ... SetupPath=D:\Steam\steamapps\common\FSX\
Looking in registry for FSX-SE install path: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Games\Flight Simulator - Steam Edition\10.0 Parameter"SetupPath" Not there, so looking in: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Microsoft Games\Flight Simulator - Steam Edition\10.0 Parameter"AppPath" ... >>> OK! FOUND FSX-SE! <<< ... AppPath=D:\Steam\steamapps\common\FSX\
************ BUT this is the same path as for FSX! Will only install for FSX-SE ************
Looking in registry for Prepar3D v1 install path: HKEY_LOCAL_MACHINE\SOFTWARE\LockheedMartin\Prepar3D Parameter"SetupPath" Not there, so looking in: HKEY_CURRENT_USER\SOFTWARE\LockheedMartin\Prepar3D Parameter"AppPath" ... NOT found! ...
Looking in registry for Prepar3D v2 install path: HKEY_LOCAL_MACHINE\SOFTWARE\Lockheed Martin\Prepar3D v2 Parameter"SetupPath" Not there, so looking in: HKEY_CURRENT_USER\SOFTWARE\Lockheed Martin\Prepar3D v2 Parameter"AppPath" ... NOT found! ... ===========================================================
INSTALLATION FOR FSX-SE: SetupPath="D:\Steam\steamapps\common\FSX\" Checking version of the FSX-SE EXE: ... Version 10.0.62608.0 (Need at least 10.0.62607.0) Checking compatibility with installed SimConnect: Found SimConnect build 60905 (Original) Found SimConnect build 62608 (Steam) Found SimConnect build 61242 (SP1 May07) Checking if there's already a version of FSUIPC4 installed in: D:\Steam\steamapps\common\FSX\Modules\FSUIPC4.DLL ... Version 4.939 found. FSX-SE Modules folder already exists. Okay -- installed FSUIPC4 into "D:\Steam\steamapps\common\FSX\Modules\FSUIPC4.DLL" Looking for the current user's Application Data path: ... found as "C:\Users\Rocco\AppData\Roaming" Now finding \Microsoft\FSX-SE\FSX_SE.CFG for all users, including this one Looking in "C:\Users\All Users\AppData\Roaming" ... No FSX_SE.CFG there Looking in "C:\Users\Default\AppData\Roaming" ... No FSX_SE.CFG there Looking in "C:\Users\Default User\AppData\Roaming" ... No FSX_SE.CFG there Looking in "C:\Users\DefaultAppPool\AppData\Roaming" ... No FSX_SE.CFG there Looking in "C:\Users\Public\AppData\Roaming" ... No FSX_SE.CFG there Looking in "C:\Users\Rocco\AppData\Roaming" ... No FSX_SE.CFG there Cannot edit the DLL.XML file to activate FSUIPC.