To find the log, you can go into the directory located in
Sort them by the most recently modified, and open the
file and,or the
Go down to the bottom of the file and you will see the last operation the made by the rendering or User interface, it can be a hint on the what made Smode crash or freeze
If you can not resolve your issue you can sent this file to the support team (if there is a dump generated you should also include it )
: if you are able to launch Smode, there is a shortcut to find the directory containing configuration files:
EDIT > Preferences > Go to configuration folder"