Unable to enable debug in the Spectrum OneClick Administration -> Debugging -> Web Server Debug Page (Runtime) page using Google Chrome. After launching this page, enabling debug and clicking on the Apply button, the debug that was to be enabled does not get enabled.
Spectrum OneClick 10.x with Google Chrome
Use Internet Explorer or FireFox to enable the OneClick debug.
This is a case-by-case basis. Clearing Chrome internet cache, shutting down and restarting the browser, making sure it is up to date, or uninstall/reinstall may also help.