Starting with version 8 of the program, if you de-activate Douglas Fir or SPF species in the column built-up database using Database editor, the Sizer program crashes on start-up. This has been corrected. If these species are deactivated, the program now issues a message that glulam weak-axis design is not possible, as the program requires properties from these species to perform glulam weak axis design according to CSA O86 6.5.3.