Page 1 of 1

Simplify3D will not start

Posted: Fri Mar 08, 2019 10:14 pm
by bravogolf
So starting today I noticed that simplify3D would not start. When selecting a file through Fusion 360 to print nothing happens. Trying to launc S3D throug desktop icon does not work either. Opening a S3d file does not work either.

I ununistalled both my original version of S3d as well as the lattest updated version. Restarted windows 10 and did a fresh install of the latest download. No dice.

Restarted desktop, no dice!

Restored desktop to earlier date, restarted computer no dice!

Simplify3D will not luanch.

Any insight would be appreciated.

Thank you,


Re: Simplify3D will not start

Posted: Wed Mar 13, 2019 9:41 am
by S3D-Alex
Can you try the following:

Open Windows Explorer and navigate to the following directory:


You may need to enable hidden folders to access this directory. Once there, please try deleting the file called "savedState.factory". Then, open Simplify3D again.

Re: Simplify3D will not start

Posted: Tue Jun 11, 2019 3:47 am
by Psionic001
This worked for me.

SavedState was a directory not a file.
And I also deleted every other file in the S3D-software directory.

Re: Simplify3D will not start

Posted: Tue Jun 11, 2019 9:22 am
by dionsamsoe
Hi Barvogolf,

I'm experiencing the same issue and also made a post about it.
I usually fix the application startup issue deleting this exact key "HKEY_CURRENT_USER\Software\Simplify3D\S3D-Software\MainWindow" which looks to contain some file hostory information of some sort.
This way your profiles wil be untouched and you dont have to waste time to reconfigure the entire program, which i did like a couple of times...

Hope this helps for u and the devs will fix this issue soon.