I have a complex object of two parameters that I would like to be able to accept. I.e., I would like to be able to prompt the user to enter the two parameters, and I will build an object out of them. I have been trying to do this in an interactor window using accepting-values and get the following error:

GRAPH-MDP(13): (accept 'termination-function :stream pane :prompt "Termination function:") Error: No methods applicable for generic function #<STANDARD-GENERIC-FUNCTION INVOKE-UPDATING-OUTPUT> with args (#<STANDARD-INPUT-EDITING-STREAM @ #x9c015cc2> #<Closure (FLET CLIM-INTERNALS::INVOKE-ACCEPTING-VALUES #:UPDATING-OUTPUT-CONTINUATION105288) @ #x9c02ab02> CLIM-INTERNALS::ACCEPTING-VALUES-RECORD (NIL) #<Function EQL> CLIM-INTERNALS::NO-CACHE-VALUE #<Function FORCE-UPDATE-CACHE-TEST>) of classes (STANDARD-INPUT-EDITING-STREAM FUNCTION SYMBOL CONS FUNCTION SYMBOL FUNCTION)

I was wondering if anyone could see their way to providing me a hint about what's wrong.

Thanks, R