Hi,
Linux Paratext 8 is failing to make available new project plans, that became available after the initial install.
To fix this:
Close down paratext.
Open a terminal and copy and paste in the following (pressing enter/return after the paste):
cp -n /usr/lib/Paratext8/ParatextProjects/_StandardPlans/* ~/Paratext8Projects/_StandardPlans/
Now when you restart paratext 8 you should have access to all the new project plans.