If your software crashes, and/or you get the "application has unexpectedly quit" error directly after executing a render, be sure to set the file name and determine the Save location prior to the final scene, or animation render. In the Properties Tray/ Output Settings - Select the file format for output, Set File Name, select "in named file" (not default). A Save dialog will open as a result, specify a file name, and save location on your hard drive, hit Save.
Save large files externally, or to scratch. Files saved/ rendered to the scratch disk will save in the "Eovia Tmp" folder on the hard drive, or hard drive root directory.