Corrupt file

[DustyCustoms]

After it being resolved I have faced the corrupt file issue again. I have found a backup that works, but have lost an hour of work and can’t keep having this as I am working to a deadline, with it being for my GCSE’s. What I have noticed is that it wipes out an entire sitting of work, no matter how many times I save it.

When running fusion 360 I always make sure I have nothing else running, restarting the pc and waiting for it to settle before running it. The curry’s link below is the pc I have, just incase it could be a contributing factor. I have also attached a render of the project from a couple weeks ago to show the scale of the project (this doesn’t show the most recent state of the project though).

All help is greatly appreciated, thank you.

https://business.currys.co.uk/catalogue/computing/desktops/windows-desktops/lenovo-legion-y520-intel...

[jhackney1972]

Since it is impossible to look at your system or your Fusion 360 installation and configuration all anyone can do is guess as to what is causing this.  I have been thinking about your issue and I keep coming back to how Fusion 360 saves your work to the Cloud.  To get to the Cloud, it has to go across your local network connection and an intermittent local network issue could be causing your issue.  As a file is being saved, one of these intermittences may occur causing the corrupt data to occur.  Sure, everyone can be unlucky and get a blip in their network connectivity and at the precise moment to affect their save but you seem to be getting them more often than the regular user.  I myself have be using Fusion 360 for over 4 years and have never had a corrupt file issue.

My suggestion to to take a look at some network connection monitoring application and see if this is your issue.  You can search the internet for yourself but here is one I found that may interest you.  I personally have not used this service and have never experienced any need to use it so I cannot vouch for its use.

All of this is just my take on your issue.  Judging of all the facts it is a logical conclusion.  You have said that your are using a local backup and pressing Ctrl+S to create a local backup, have these also been corrupt?  If so, then network connectivity IS NOT YOUR issue and I would look at your local machine and current installation of Fusion 360 instead.

Just my take on your declared situation.

[bentwookie]

I'd be pretty surprised if the problem was a flipped bit along the way. If Autodesk is not transmitting saves over TCP in a way that they can verify all bits of it have been received correctly (and report failures to the user), then something is weirdly wrong with their architecture. 

When this has happened to me, the only way I've been able to proceed is to have an Autodesk employee hand edit the file. The most recent time was a month or so ago when some operation left a bad entry in a chain history structure. I was able to see it fail in a backtrace and they were able to patch it up and get me going again.

I'm sure they'd be very interested to hear if you've got a reproducible case of an operation which corrupts files. They'd stand a better chance of fixing it for all of us!