Fatal error "basil"
Upon starting PA, a grey box appears with the text
Planetary Annihilation encountered a fatal error: Unexpected failure when initializing user interface subsystem. Error code: basil You can use the error code to search out knowledgebase at http://support.uberent.com/kb/ or contact firstname.lastname@example.org and include the error code in your message.
The PA logs will contain:
ERROR Caught exception when constructing CoherentUI - locale::facet::_S_create_c_locale name not valid
The crash is due to an unknown locale setting.
Setting the environment variable to LC_ALL=en_US.UTF-8 will fix this.
If using Steam then set launch parameters to LC_ALL=en_US.UTF-8 %command% (right click on PA > properties).
If using the stand alone version it depends on your desktop environment.
Edit your shortcut to PA to include
LC_ALL=en_US.UTF-8 before the executable or add to environment variables if that is an option.