Disregard – found the issue…registration disabled within WordPress itself.
I’m having a similar issue and I tried following the instructions above but I must be missing something.
does lddlite_templates go directory in /Themes folder or /Themes/MyTheme folder. Also should the plugin automatically recognize the new single.php page or do I have to select it somewhere?
Figured it out – it’s a setting under ‘sharing settings’ in Jetpack. There is a checkbox for WikiPages 🙂