We plot by object lineweight, with our half-size page setup using the "Scale Lineweights" checkbox. It's worked fine until our recent upgrade to 2018. Now, no matter which sheet size is printed (11x17 at 1:2 or 22x34 at 1:1), if the "Scale Lineweights" box is checked the preview, as well as the sheet, comes out with all lineweights at zero. Please don't tell me I'm the only one who's run into this.