I specify the framing as "log" and then choose the log thickness. If I continue entering all relevant data and click "Next" to initiate the calculation, everything goes fine. If, however, I click "Save", the log thickness is lost. I then try to re-select the thickness but no thickness selection is presented. So I have to select another framing material and then select "log" again. When I do this, my original thickness selection appears. I then have to repeat the process for all log walls prior to clicking "Next" button. Just a bug in need of attention.