Zrevnur: Is this supposed to still work properly for 2.5.1? Because for me it doesnt show the custom resources like 'Beer' anymore (and there may be more problems which I dont know about).
Primal_Savage: Make sure you have the file XH_Resources.xml in your GOG FELH Core files folder. (Something like ...\data\English\ )
Step #2 of the installation process should fix the issue (Will move the XH_Resources.xml file from ...\Mods\0_NO\ to your GOG FELH Core files folder).
Beer is showing in Steam version.
Thanks for answer. I checked and it appears I made a mistake with my merging. Will try again.
Edit: This works now. (Unfortunately the end-turn-crashing didnt get fixed.)
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Found some issue though: The file 'aDLC04_Units.xml' was renamed to 'DLC04_Units.xml' so its no longer overwritten by copying the 'aDLC04_Units.xml' file. Will try to delete the 'DLC04_Units.xml' and see if this works.