So I installed the GMDX mod, specifically, the RSD beta version. It works fine so far with the gog install. Till now I've been launching it using it's own shortcut which it creates during installation ("play_gmdx").
Is there a proper method to have this executable launched via the galaxy launcher? I tried to configure a custom launch executable in the game's config menu in galaxy itself and used the play_gmdx as a custom executable. But when I launch it, the game seems different from when I launch the executable directly. Specifically, there seems to be no graphical mods loaded which come pre-installed with GMDX (hdtp, new vision). Also the saves which I made when launching the game directly aren't present in the galaxy launched method. Am I to do some additional settings I don't know of?

Read here.

As I'm trying to add mine as an "Additional Executable", and I'm using my own code not bought through GOG, I have no .info file to edit.

Is there a specific format to follow, if I needed to create my own?

(I'm just going to use the shortcut from the ribbon while I wait.)

This worked for me, thanks!

Were you able to download the 2.1 hotfix as well? It is not on moddb and the link does not work.