The Linux version of
Wasteland 2: Director's Cut has a weird bug which doesn't allow either to save or enter (sometimes) into
Ranger Citadel location. This is an engine-level issue in the used Unity version: Unity loads into memory multiple copies of the sames game files.
To fix this issue we need to update permissions for max open file limits in Linux. Open
/etc/security/limits.conf file as
root user (or using
sudo) and add the following 2 lines at the end of the file:
username soft nofile 4096 username hard nofile 8192
username should be replaced by the real user name.
In case if it doesn't work, try the following
sudo sh -c "ulimit -n 8192 && exec su <username>"
Solution found here on the Steam Forum