minor edits in an attempt to fix dimension mismatches when augmenting a checkpoint file with more data
minor edits in an attempt to fix dimension mismatches when augmenting a checkpoint file with more data

beast-dev/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc