print error if essential uniform not found
print error if essential uniform not found

rbouqueau/gpac_brew_travis,vladimir-kazakov/gpac,rauf/gpac,gpac/gpac,porcelijn/gpac,emmanouil/gpac,rbouqueau/gpac,Bevara/Access-open,rbouqueau/gpac_brew_travis,gpac/gpac,nguyen-viet-thanh-trung/gpac,emmanouil/gpac,gpac/gpac,Bevara/Access-open,vladimir-kazakov/gpac,gpac/gpac,rbouqueau/gpac,ARSekkat/gpac,Bevara/Access-open,ARSekkat/gpac,rbouqueau/gpac,vladimir-kazakov/gpac,ARSekkat/gpac,porcelijn/gpac,RodolpheFouquet/gpac,rbouqueau/gpac_brew_travis,porcelijn/gpac,nguyen-viet-thanh-trung/gpac,Bevara/Access-open,rauf/gpac,vladimir-kazakov/gpac,RodolpheFouquet/gpac,gpac/gpac,RodolpheFouquet/gpac,Bevara/Access-open,rbouqueau/gpac,rbouqueau/gpac,porcelijn/gpac,gpac/gpac,RodolpheFouquet/gpac,emmanouil/gpac,aymanelyaagoubi/gpac,rbouqueau/gpac,gpac/gpac,rauf/gpac,rbouqueau/gpac,gpac/gpac,aymanelyaagoubi/gpac,ARSekkat/gpac,vladimir-kazakov/gpac,rbouqueau/gpac,emmanouil/gpac,aymanelyaagoubi/gpac,RodolpheFouquet/gpac,rauf/gpac,rauf/gpac,emmanouil/gpac,vladimir-kazakov/gpac,RodolpheFouquet/gpac,rbouqueau/gpac_brew_travis,nguyen-viet-thanh-trung/gpac,rbouqueau/gpac_brew_travis,aymanelyaagoubi/gpac,porcelijn/gpac,porcelijn/gpac,rbouqueau/gpac_brew_travis,aymanelyaagoubi/gpac,rauf/gpac,ARSekkat/gpac,nguyen-viet-thanh-trung/gpac,nguyen-viet-thanh-trung/gpac,Bevara/Access-open,ARSekkat/gpac,aymanelyaagoubi/gpac,emmanouil/gpac,nguyen-viet-thanh-trung/gpac