What Elhana said - mount_hammer2 isn't included in /usr/share/initrd so it's not copied into the image used there.
You can build a new initrd - cd into src/share/initrd/sbin, add it to the makefile, type 'wmake install' I think, and you may be good. I am guessing because I don't have an encrypted disk to test.
Otherwise, wait and there will be an updated 5.01 image soon, I'm sure - the recent KRACK vulnerability will prompt that, if nothing else.
You can build a new initrd - cd into src/share/initrd/sbin, add it to the makefile, type 'wmake install' I think, and you may be good. I am guessing because I don't have an encrypted disk to test.
Otherwise, wait and there will be an updated 5.01 image soon, I'm sure - the recent KRACK vulnerability will prompt that, if nothing else.