I've very sorry for the long delay in sorting this out. I've uploaded a new version (0.21).
There are four changes: (1) Fix of a fairly serious bug that stopped lots of the admin functions working. (2) Fixing a minor bug that caused errors on the settings page. (3) Two additional warning messages in TNG Options that might help diagnose problems for some users. (4) The option to disable the TNG home page and replace it with a Wordpress page.
IMPORTANT NOTE: After installing you MUST click the "Update TNG Variables" button in TNG options.
If the bug fixes don't solve your problem, and the warning messages don't help you fix it, can you contact me direct?