Most likely there is still an error in your installation.
In order to help we need some more info, can you attach/post the output of:
tree -d -I "xcom?|standard|common|mods" ~/.local/share/openxcom/ > ~/Desktop/openxcom.tree.txt
* The -I option ignores a bunch of standard folders
* The ">" construct will create a file on your desktop
* -d is there since at the moment I am only interested in the folder structure, not the files under it.