Expired invites showing errors

Hi. running 2.7.0.beta5. All of the expired invites for my system (over 300) are showing:

link ([missing %{count} value] / [missing %{max} value] redeemed)

instead of the actual name/email, etc. Dates are shown apparently correctly.

Any ideas? Thanks!

Addendum: Something is amiss with invites also, e.g., one from this morning shows as:

link (0 / 1 redeemed)