Thanks for your e-mail.
I created a `local.conf' file containing the three lines given in your e-mail, and ran `wp-mirror --info'. This emitted the WARNING messages that you mention, but did not throw the error that you saw as your last line of output.
That said, the error you report looks very much like that thrown by a missing apostrophe. Please try:
(shell)$ clisp -q -q
> (defparameter *mirror-project-list* '("wikipedia" "wiktionary"))
> (defparameter *mirror-project-list* ("wikipedia" "wiktionary"))
*** - EVAL: "wikipedia" is not a function name; try using a symbol instead
The following restarts are available:
USE-VALUE :R1 Input a value to be used instead.
ABORT :R2 Abort main loop
Break 1 > :r2
Note that the apostrophe given in line  is missing in line . I think that this reproduces the error that you report.
So please take a close look at your `local.conf' and let me know if you find anything.