I had same problem , had titan v37 and nitroid flying world / multiboot v2.5 , all worked fine until i upgraded to titan v40 , exactly same errors as kishan regardless of installing from xterm or ham , reinstall etc etc , i downgraded back to titan v37 and all is working again , unlucky v40 gives errors to some but is because it seems nitroid/multiboot wont work with v40 wait for new versions i reckon though if anyone kmows solution please share