Hi Marie,
There are a couple of things I would look at. "Weed Border" and "Reduce Frame." In GspPlot, in repeats, look at "Spacing." Is your border checked? You can turn the weed border off so it doesn't cut, but the "weed border spacing" may still be on. Look at the icon for your weed border. Notice that there are three settings: Weed border on, weed border off, but spacing still on, and weed border and spacing off. Most people think there are only two settings. But as you click the icon watch where the little "x" moves. If you set the border for 0 or uncheck it in the dialog box then it won't add it to the job. If the border spacing is .25", and between printing and cutting you think you clicked the weed border off, but the spacing is still on, you could add or subtract .25" all the way around, which is an extra .5" difference between the pieces.
Second possibility: Reduce Frame. This was designed to save vinyl when multiple colors of vinyl are used in a job. It is easily mistaken for the Weed Border tool. If the "E" is large inside the blue box, then it's turned on. If it's small, then it's off. I default it for "on" because I often "output selected." If you accidentally click it, it will most likely throw your cut off, even if you click it again. If you are close to the 11.8" limit and you click it, it may want to panel the job, especially if the cut extends past 11.8". If you click it off again, it might not reset. You may have to close the job in plot and reopen it, or send it again from Composer.
I think one of those to things probably happened. So I try not to get too click happy between printing and cutting. It saves material. If that doesn't work for you, try assigning the Abrasion Guard in Composer as an overprint instead of in assigning it in GspPlot.
Doug Goodloe
Gerber Specialist
800-232-8018