This morning I have been trying to clip, extract, do anything with a DEM in V3.4 on a mac10.14.3 (it works fine on linux Debian).
I receive an error message in the dialog box - attached and the log messages indicates '/bin/sh: gdal_translate: command not found'
I installed Madeira (3.4) from the main site, not through Kyngchaos, and using python 3.6.x as instructed in the dmg file.