Problem installing Nightly Version

[Matt]

Sorry if this issue as already been adressed somewhere but I couldn't find it if it has.

I've been running the milestone version fine for while and it work fine however when trying to install the final modpack I could not get it to show up in the mods menu. After some reseach I came to the conclusion I probably needed the nightly build insted. But when I run the appimage (I'm using linux) file I get this message:

c:\GAMES\OPENXCOM>openxcom

ERROR: No X COM installations found
Make sure you installed Openxcom correctly.

Is there something different I need to do to install Nightly. I assumed it would be the same

Thanks

[SupSuper]

The original game files have been moved slightly. In v1.0 the path was like this:

$HOME/.local/share/openxcom/data/

In the nightlies it's slightly different:

$HOME/.local/share/openxcom/UFO/