It is possible that your version of enblend doesn't support OpenEXR format. If you're compiling enblend from source please make sure that OpenEXR is correctly detected, if not ask the builder who build the enblend executable.
It is possible that your version of enblend doesn't support OpenEXR format. If you're compiling enblend from source please make sure that OpenEXR is correctly detected, if not ask the builder who build the enblend executable.