while we are at it, I’ve noticed another possibly related issue, but have not been able find time to re-investigate (ok… when I DO have time to investigate it, I forgot and went on playing… ;p )
There are some characters, when being used in the template name, will break the image link as well. I remembered “+” does not work, though the UI doesn’t complain. (I later worked around it by spelling it as “plus” instead).
I suspect that it is probably because there is a function that converts template names to actual file names that is being used, but it did not handle some special characters consistently with another function that stores that for something else. As a result, we have a “key” that is disjoint from the file name.