FreeBSD Port: sysutils/zfs-snapshot-mgmt

[MSBSSK at gmx.de]

Hello,

I use FreeBSD 10 RC-1 with zfs-snapshot-mgmt. My current config file is visible at http://pastebin.com/qwp84BR2.
If I use this configuration the tool does not create a snapshot for z-storage/usr/home. If for unknown reason I move the z-storage/usr/home part between the z-storage/ROOT/default and the z-storage/var part all is working fine.

Is there any defect I hit or any rule I exidently ignored ?

Furthermore even after changing the order I receive the following error message:

/usr/local/bin/zfs-snapshot-mgmt:130:in `join': can't convert nil into String (TypeError)
        from /usr/local/bin/zfs-snapshot-mgmt:130:in `snapshots'
        from /usr/local/bin/zfs-snapshot-mgmt:137:in `snapshots_to_remove'
        from /usr/local/bin/zfs-snapshot-mgmt:145:in `remove_snapshots'
        from /usr/local/bin/zfs-snapshot-mgmt:213:in `block in <main>'
        from /usr/local/bin/zfs-snapshot-mgmt:210:in `each'
        from /usr/local/bin/zfs-snapshot-mgmt:210:in `<main>'

Does anyyone has an idea what this means and how I can fix this ?

Best Regards Marc