Here is a quote from the README.txt file of this module.

2. go to admin/settings/blocktheme and add entries like:
customtemplate|My Custom Template
mysupertemplate|My SuperTemplate
Where the first name is the machine-readable etc...

This implies, correctly, that a space character ought not to be present between the "customtemplate" and the "|" character (in the above example). However, it is not explicitly mentioned anywhere in the documentation, and certainly not in the readme.txt file itself. But actually, having a space character after the machine readable name and before the | character causes this module to malfunction.

Comments

damienmckenna’s picture

damienmckenna
Location TN, USA
commented

Please test the patch from #376019: Code cleanups, may fix some issues to see if it resolves this issue.

amateescu’s picture

amateescu commented
Status: Active » Closed (works as designed)

The "etc..." you left out from README.txt is:

Where the first name is the machine-readable name of your template which may contain only
alphanumerical characters, -, or _ . The second name is the user-friendly name that appears
in the selectionbox on the block edit form.

I think this clearly indicates that there is no other character allowed except alphanumeric, dash or underscores for the first part of the entry.