Hi,
Sorry, I was a bit vague there :-)
I'm using Joomla 3.3.1 on WampServer 2.2, with JoomSEF 4.5.2.
I removed all extensions and Template Creator then worked again. I then re-installed until it stopped and so tracked the conflict as being with JoomSEF.
When I try to edit/create a template from the templates list I get:-
With JoomSEF default handler - "Error displaying the error page: Application Instantiation Error: No database selected SQL=DELETE FROM `rn9cr_session` WHERE `time` < '1405612033'"
With Default Joomla! router or Don't SEF - the next couple of pages/pop-ups open and it shows the template for editing but the timer just goes round.
At times, I'm not sure why, I have managed to configure something and get past the timer, but then none of the links on the template page work, including the one to close it.
Thanks,
Adam