I have made only minor changes to my capture-templates variable, which is
admittedly quite convoluted.  Recently, this error pops up whenever I run
C-cC and any of the keys for templates:

 Capture abort: (wrong-type-argument stringp |)

Does this ring a bell for anyone?  Does this mean that "|" is encountered
in a template, as a string, and shouldn't be?

Thank you,

Alan