[CM] new-effects.scm problem in snd

[Drew Krause]

Forgive me if this has already been noticed & solved:

I just installed snd-6.12 on Redhat 9 and "new-effects.scm" loads 
properly into the listener, but when I then select anything in the upper 
part of the Effects menu, the listener tells me:

Unbound variable: current-screen
: gxm_XtCallbackProc

I've used "new-effects.scm" before with great success, in fact I miss 
not having it!

Any help appreciated,

Drew Krause