(AC27) In the U-Value (R-Value) Calculator help documentation there is
the following statement ... Page 3012"Select any structure in the list.
In the U-value column, click the three-dot button - with the lock icon
set toclosed (red) - to bring up the...
Same problem occurred for me after importing layer combinations from
another file. It seems the layers combinations got a bit confused and
every possible change reverted to "Custom". The fix for me ...I created
"New" combinations based on each existi...