A new year, a new version of Solidworks and a new page not found
This issue is logged as SPR# 995663 which you can attach to in the Knowledge Base if you like. The description in the KB is very generic, but it is this specified issue. There is actually nothing new for the mate dialog in SOLIDWORKS 2017. We did have new functionality for mis-aligned mates in Beta, but it was determined from user feedback that it still needed work, so the functionality was removed. The help topics were also removed, but it was an oversight to not remove the button for the what's new help in the mate dialog; hence the SPR.
I get this message so probably a broken link. Though path is correct.
It works fine when a used from a different feature.
hopefully functionality was removed also means never to return.
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