... you post the .box file? regards, Martin. Attachment: attach_1661_2329_goggwrsingleslip1 in7_2013_10_06_1101_05.box 296 posted: 6 Oct 2013 11:21 from: Martin Wynne Hi Stephen, You have however found a different bug, so many thanks for that. Restoring timbers via that "invalid request" dialog always sets the equalized-incremental (skewed) timbering style, regardless of the previous style in force when you turned the timbering off. I will get that fixed. Note that the proper way to turn the timbering off is via this menu: 2_060610_100000000.png And the proper way to turn it back on is to select the desired timbering style on the same menu. A bullet point on a menu item means that it is one of a multiple choice group of items -- to deselect the selected item you must click one of the other items. Whereas a tick mark on a menu item means that it is an on-off toggle, and to deselect it you must click it again. This is all basic Windows functionality from the year dot, but surprisingly I have ...