I also stay in contact to Autodesk Fusion 360 dev team. But there is no solution in prospect. Autodesk is providing two diffrent versions of Fusion 360: the AppStore version (without 3rd pary accessories support e.g. 3D mouse) and a web installer without any limitations. Both are crashing at the sign-in / startup process.
I guess, this behavior has a conntection to:
https://support.apple.com/en-us/HT204932
How can I, as a user of Fursion 360, set-up a workarround and get the software working again?
Any help would be greatly appreciated.
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Conversation at Autodesk Forums:
http://forums.autodesk.com/t5/design-and-documentation/not-running-on-el-capitan-beta-2/td-p/5690829(current)
http://forums.autodesk.com/t5/api-and-scripts/os-x-el-capitan-beta-issues/td-p/5690467