Corrupt Project after Crash on Save.

[Anonymous]

Broken Project:

https://a360.co/35UksKu

(Let me know if i shall mail the password to particular devs)

I've been working on a great design in FORM mode.
While it got rather complex at some point, fusion never mentioned issues at all.

Until suddently it claimed to have auto-backup saving issues and it RECOMMENDED to me that i shall save manually.
Which is what i did, and which ultimately crashed Fusion360 with an immediate freeze that didn't even trigger the crash report system.

When i fired Fusion 360 back up, i was left behind with multiple corrupt *Backup Saves* up to a point where i simply lost 90% of everything i've been working on for a very long time. Even saves long before the message has been shown.

I sincerely hope that there's a way to repair these corrupt saves, otherwise this might have been my last time trusting Autodesk for critical tasks. Sidenote: I've experienced at least 8 crashes in total over the course of this project. Guess i've lost faith already...

(I've been working with ZBrush for a very long time now and never run into major crashes and especialy not corrupt saves)

Cheers.

[Phil.E]

Hi,

Sorry for the trouble with this model. I'd like to help. You should have an email from me asking for the password to the design. This should help me repeat the crash and get it fixed in our development process. Your help is appreciated.

I will ask if the file can be recovered and let you now asap.

Regarding what happened, I'm sorry and can only offer some advice for you or anyone else who might listen. 

Recovery save is not for saving your designs. It is an emergency backup recovery in case Fusion crashes. If a command is running, such as Edit Form, no recovery save can be done. This is why Fusion asked you to manually save a new version to the cloud, because a command had been running for a very long time blocking local recovery save. You simultaneously ran into a bug related to complex t-spline geometry that is apparently causing a crash on open.

If I have your design I can confirm all this.

If you create a new version in the cloud you can access all the old ones. Did you by chance save a version to the cloud that has some of your progress, and does not crash on open?

Tips for modeling in Form environment for extended period:

• Save/Create new versions when you feel that significant progress has been made.
• Occasionally exit Form, or use the Utilities > Convert command to check the Form integrity, should you wish for the design to be converted to Brep geometry eventually.
  • This may not have found your problem earlier, but it's one way to ensure you don't work for hours on a form may not function downstream as you expect.

Thanks,

[Anonymous]

Hi Phil

Thanks for the reply, although it's way too late.

Yes, i've had saved progress multiple times, but then i was so into "sculpting" for hours that i forgot about it until the message popped up. I usualy save a lot, and especialy after bigger changes. Which is what i tried when it crashed on me.

I used 100% T-Spline modelling for a T-Spline end-result with sharp edges as it was an abstract geometric design.
It gave the the freedom to create the design i wanted, as it was simply impossible in the normal design mode.

The finished model can be converted because i kept the integrity, but it wasn't really needed.

I know it's usualy used to create a base model and then convert it, but that would en up losing hard edges which wasn't the idea.

This project crashed >12 times, just by clicking onto the wrong spline or point.
Or deleting/moving a point, spline or area that Fusion couldn't handle.

The object was neither super complex nor anything out of this world, it simply feels like Form/T-Splines modelling isn't up for the task.

It threw me back 6 times to repeat steps i've done previously.
That one time was really big.

In total lost aprox. 14 hours of work during the entirety of this project.

Which is a lot.

At this point, i've finished my model by recreating everything over and over again.


3 out of 12 crashes were able to be reported through the auto-report tool.
All other crashes didn't even make it up to the report tool or, according to the logs, the crash report tool crashed.
Hope at least the reports that came through are going to show results.

I loved Fusion at first, but after working mainly with T-Spline i'm scared far off.
No, i'm not a Fusion professional by any means, but 12 unrecoverable crashes on a rather simple model....

Gonna think twice if i'm ever going for T-Spline modelling again.

[Phil.E]

Thanks and sorry I wasn't able to help. Although you should know every crash report you sent had the same callstack. It may have been a simple model, but it had one fatal flaw, not 12. That's the reason I asked for the design to help fix this one problem and avoid all crashes related to it.