cal-tex-mouse-... not working on emacs20

[Johann Spies <jhspies@futurenet.co.za>]

I am trying to make a Latex calendar and have done it in the past with
emacs 19.31 and latex.  When (in calendar mode) I try the
alt-cal-tex-mouse-month-landscape command, I get the error message: wrong
argument type: listp, return.

What does that mean?  How can I get it to work?

Johann
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| Johann Spies,Windsorlaan 19, Pietermaritzburg, 3201, South Africa        |
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