The way Windows 10 is serviced and updated, it routinely creates crashing issues for Explorer because Microsoft's upgrade process is imperfect even after years of trying and cannot even properly migrate desktop app settings after the upgrade - it ends up deleting certain configuration in the Registry. On a clean install of Windows 10's latest release, Classic Shell works. But often when in-place upgrades are done, Windows Setup damages it or causes serious issues due to their imperfect update process causing a partially installed state where Classic Shell crashes Explorer. I recommend you to stay with Windows 7 or 8.1 if you want to use Classic Shell.
You could capture a crash dump as per these instructions:
viewtopic.php?f=12&t=6 but there are so many instability issues in general with Windows 10 that it is always going to give you problems. It's not a good, well-engineered system.
Another thing you can try is download the Classic Shell Utility from here:
http://www.mediafire.com/download/3uker ... tility.exe and use it to clean all traces of Classic Shell from your existing installation, including all settings. Then try a clean install of the newest version.
However we cannot guarantee it won't crash or break again because Microsoft designed Windows 10 to routinely break desktop apps that integrate deeply with the system.