Is there some sort of trick to exporting from Revit 2017 to Formit?
After getting crashes for every project I tried, I tried a clean test file with just a few masses, purged of everything else. There is almost nothing in the file, the view has only a mass and a few model lines and it gets stuck "Upgrading the model". The model only exists in Revit 2017. Eventually, after "upgrading" for 15-20 minutes it crashes.
Updates are all installed, Formit is NOT installed, I was planning on sending the model to my iPad.
Same results on two different computers running Windows 7 Pro.
Thanks,
I tried converting the Default Mass families (C:\ProgramData\Autodesk\RVT 2017\Libraries\US Imperial\Mass) included with Revit, as described in the FormIt 360 Converter help topic and this worked for me.
What steps are you going through in Revit to create FormIt AXM files?

I am having the same problem, but the link to the help file referenced is no longer valid and I can't seem to find it anywhere. Could someone update that?
Here is an updated link that should work:

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