Whatever name i choose for a new share is invalid

I have done a factory reset now and am waiting for the volumes to sync. I think I know what I did wrong initially. I inserted the disks, ran raidar, clicked setup, then, as nothing appeared to happen, went in to the Raidiator dashboard and tried to use the NAS. no go, so went back and clicked setup again, entered admin and password, went back to dashboard. Of course, I realise now that i didn't give the NAS a chance to create the volume, as there was no green light under the volume column in raidar. This morning when i tried to restart the nas the machine Sent me emails about not being able to read the volume, and the share paths being invalid.

Hopefully now it will work. How do I know when it is ok to use? Will raidiator show a message?