TDMS Read error -2532

[testingHotAir]

Hi all,

I'm learning how to use the tdms file format and have run into what appears to be a bug.  In the attached VI, I open the tdms file, get the group names, select the first group in the array and wire that to the "Group Name" input of a TDMS Read VI.  I get back error code -2532, "Invalid group name and/or channel name."  Am I missing something here or is this a bug?

I've attached both the VI and the tdms file that I'm using.

[testingHotAir]

Whoops...figured it out just now.  That tdms file has no channels!