Code generation from STM32CubeIDE's CubeMX plugin only generates EWARM not STM32CubeIDE project files

Hi!

I am working on an STM32H7-based project which I am trying to migrate from the DISCOVERY evaluation hardware to custom board. A colleague of mine has created a new `.ioc` file with a newer version of CubeMX than the standalone vesion I have currently installed. Due to lack of admin rights I have to use the CubeMX plugin inside of the STM32CubeIDE until my IT department installs a new standalone version - as the `.ioc` file cannot be loaded with an older version.

I can manually create a new STM32 project from that `.ioc` file and generate an STM32CubeIDE project. Then navigating to the "Project Manager" tab only shows "STM32CubeIDE" in the "Toolchain / IDE" dropdown menu which is even grayed out.

However, I'd like to automate stuff. I've written a Windows batch script which executes a CubeMX script that can basically be narrowed down to the following lines:

SET JAVA_EXE=C:\ST\STM32CubeIDE_1.8.0\STM32CubeIDE\plugins\com.st.stm32cube.ide.jre.win64_2.0.100.202110150814\jre\bin\java.exe
SET CUBEMX_EXE=C:\ST\STM32CubeIDE_1.8.0\STM32CubeIDE\plugins\com.st.stm32cube.common.mx_6.6.1.202207061420\STM32CubeMX.jar
 
REM Reference CubeMX script files from the same folder as this Windows batch script (%~dp0)
SET CUBEMX_SCRIPT_APP=%~dp0CubeMXScriptApp.txt
 
ECHO INFO: [%~nx0] JAVA_EXE=%JAVA_EXE%
ECHO INFO: [%~nx0] CUBEMX_EXE=%CUBEMX_EXE%
ECHO INFO: [%~nx0] CUBEMX_SCRIPT_APP=%CUBEMX_SCRIPT_APP%
"%JAVA_EXE%" -jar "%CUBEMX_EXE%" -q "%CUBEMX_SCRIPT_APP%"

The script file itself is also quite simple:

config load ../../CubeMX/CubeMX_Application/STM32H7xxValidationVerification_90fd6ed_HW_Test.ioc
project toolchain "STM32CubeIDE"
project generate ../../CubeMX/CubeMX_Application
exit

(In earlier versions of the script the line containing "project toolchain" was missing. I don't see any difference.)

But: I get code generated for EWARM. Plus: the following changes in the `.ioc` file (the toolchain line modified and the `isbadioc` line removed):

- ProjectManager.TargetToolchain=STM32CubeIDE
+ ProjectManager.TargetToolchain=EWARM V8.50
- isbadioc=false

I've also tried to just open CubeMX from command line as an intermediate step and then generate code from the `.ioc` file manually (discarding the changes made by CubeMX). Start CubeMX:

"C:\ST\STM32CubeIDE_1.8.0\STM32CubeIDE\plugins\com.st.stm32cube.ide.jre.win64_2.0.100.202110150814\jre\bin\java.exe" -jar "C:\ST\STM32CubeIDE_1.8.0\STM32CubeIDE\plugins\com.st.stm32cube.common.mx_6.6.1.202207061420\STM32CubeMX.jar"

Then "File" > "Load Project ..." > file select ... loads the `.ioc` file without any errors.

Then navigating to the "Project Manager" tab only gives me the options "EWARM" + "MDK-ARM" and "Makefile" (but not "STM32CubeIDE") in the "Toolchain / IDE". So I guess this is related to the runtime environment... - maybe some environment variable(s) missing?

Please understand that I cannot provide the full `.ioc` file here due to IP/ ongoing development reasons - but I am happy to share snippets.

Are there any specific messages I should search for in the command line output?