The error message indicates that somewhere in the pageset the column width is specified as something other than 3.375" (243.91pt). Are there multiple triplets (recto, verso, blank page) are in the problem pageset?
Look for a column width of 3.00" (216.81pt). (1" = 72.27pt)
David
David S. Taylor
Project Manager, Structured Information
Institute for Research in Construction
National Research Council Canada
Bldg. M-23A, Room 239
1200 Montreal Road, Ottawa, ON K1A 0R6