Can't open RAW (via RawTherapee)

I have Gimp 2.10.24 on Ubuntu 21.04
I have set Gimp as the external editor in RawTherapee 5.8 (RT)

When I click the External Edit button in RT, Gimp launches but an error appears “Opening ‘/tmp/DSC06216.tif’ failed: Error opening file /tmp/DSC06216.tif: No such file or directory”

I checked /tmp dir & tif files ARE generated & user has permission to read/write those files.

I tried setting Gimp prefs for Raw import as Placeholder & RawTherapee, but the result is the same.
I also installed darktable, but no option for import shows up for that in Gimp.

I don’t have a direct answer for this (yet), but I’ll fire up an Ubuntu 21.04 and try it out to see.

Are you using the flatpak, snap, distribution package (or build from source)?

Hi patdavid, I was able to fix this with some help on

I did have the snap install from Ubuntu Software app.
On advice I removed it & installed a PPA version on Launchpad here.

Now the feature works correctly.

Snaps are sandboxed and can’t be launched in the same manner as distro packages.