I recently upgraded to 2.0.13.1 and discovered that after the upgrade I was no longer able to edit my custom templates in the Template Set Manager. Attempts to edit returned the following error:

Selected template (ID: $id) does not exist

I discovered this while attempting to tweak one of the system templates. Updating the system module did not help.

As a workaround, I cloned my custom template set (which itself was a clone of the default set). The cloned templates were then editable. However, the cloning operation produced two copies of each custom template within the new template set. I went through and deleted one duplicate of each, then assigned the cloned set as the default for the site. The site appears to perform normally.

Has anyone else experienced this problem, and is there a patch/better workaround available?

Thanks,

Bela