While trying to recover from the issue in this thread:
http://www.azeotech.com/board/index.php?/topic/4886-channels-were-deleted-after-open-in-trial-mode/page__hl__+trial%20+version#entry17127
I exported (working) LabJack channels from a backup project and imported them into the main one. The list gets populated correctly and everything looks fine, but when read the A to D channels show an integer value. Looks like the automatic conversion to floating point volts isn't happening.
If I add the channels one at a time manually they behave normally, so that will work for the time being.
Attached is the channel export and a screenshot of the table.
(renamed the channels to .txt to allow upload)
lt-channels.txt