outside the IDE/Listener prompt-for-file hits error with existing files

Starting lw from a terminal, and typing into the REPL of the terminal:

 (capi::prompt-for-file  "Outfile:" :operation :save)

and providing an existing filename when prompted, signals an error:

"No applicable methods for
CAPI-LIBRARY:CONFIRM-YES-OR-NO-ON-SCREEN-REPRESENTATION..."

Same behavior happens in a image saved without the environment.

The same call/answer works as expected when evaluating from the
REPL/Listener inside the IDE/Environment.

-anders

Heres a bug-report: