Leap Bridge Concrete - Input Loads

How do I modify the magnitude on the manually entered loads on the Loads tab in LEAP Bridge Concrete?  Mag1 column is greyed out and does not let me edit.  I tried inserting new rows, and starting all over from scratch with a new file, but it consistently won't let me edit the magnitude.

I did install the latest update to OpenBridge yesterday and am wondering if this is the source of the issue.