Zero values essentially tell Shoe Last Maker that you are working with a template that was developed in an older version of the plugin that did not have that parameter. The workaround is to use a number close to zero, like 0.1 for instance.
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Sometimes this can happen and I’m not sure why. The fix is use the rotateView command (or button) to get it back […]
Not currently, and probably not for quite some time.
Your relevent FAQ answer.
These would be isocurves. You can turn them off in the display settings of Rhino by setting them to zero width: Tools/Options/View/Display […]