I can only try this in a Windows10 VM, not as reliable as a physical computer.
Darktable (DT) is not something I usually install, and the current version is darktable-3.6.0.1-win64.exe A minor revision. Is this the version you are using ?
Gimp 2.10.24 does see the installation. Do you see the entry in Edit -> Preferences -> Image Import & Export and have you chosen it ?
In use very temperamental. RT on its own will open my panasonic .rw2 files and a test cr2 but not a test cr3 and exports to a variety of formats including Gimp .xcf.
Using Gimp File -> Open to pass the file to RT only got this to work once, other attempts and RT crashed, leaving a Gimp message
Error opening file 'C:\Users\rich\AppData\Local\Temp\gimp\2.10\gimp-temp-27160.exr' for reading
Keep visiting in case a regular RT user has some advice
and
Ask the question on https://discuss.pixls.us/ where the RT developers answer queries.
Darktable (DT) is not something I usually install, and the current version is darktable-3.6.0.1-win64.exe A minor revision. Is this the version you are using ?
Gimp 2.10.24 does see the installation. Do you see the entry in Edit -> Preferences -> Image Import & Export and have you chosen it ?
In use very temperamental. RT on its own will open my panasonic .rw2 files and a test cr2 but not a test cr3 and exports to a variety of formats including Gimp .xcf.
Using Gimp File -> Open to pass the file to RT only got this to work once, other attempts and RT crashed, leaving a Gimp message
Error opening file 'C:\Users\rich\AppData\Local\Temp\gimp\2.10\gimp-temp-27160.exr' for reading
Keep visiting in case a regular RT user has some advice
and
Ask the question on https://discuss.pixls.us/ where the RT developers answer queries.