When publishing a model, scene, or object to your 3DVia Shape account the following error message appears;
Publication Failed
Unknown Server Error: 500
To fix this and publish your work to the network do the following;
Click the "[b]X[/b]" top-right of the application to close it, this will bring up a dialogue box asking what you want to do. Of the options available click "[b]Later[/b]" to save the file locally. Next time 3DVia Shape is started you'll be presented with a selection dialogue listing any scenes saved locally. Select the correct file to open it into Shape and then re-publish.
The error occurs usually as the result of a long work session, you've basically timed-out the connection to the Via network so in order to publish the file the app has to be closed, reopened and you log back in.