Can't call functions from messagebox in 6.5.1

[Dr. Hawkins]

I've tried calling functions from the messagebox in 6.5.1, both from my
mainstack and builtins, such as revDataFromQuery(), and get messages like:

Message execution error:
Error description: Function: error in function handler
Hint: getVal

This was never a problem with 5.5

(yes, this is the first time I've used 6.x; the previous versions all had
serious show-stoppers [which this will be if I can't resolve it])


-- 
Dr. Richard E. Hawkins, Esq.
(702) 508-8462