EDE: customize-target behaves buggy when called from speed bar

[Sascha Wilde]

And one more:

I use: M-x customize-target in my test project to add the library "talk"
to the :ldlibs of my target hello.

When doing M-x ede-speedbar and pressing [RET] over the target "hello" I
get an similar custom buffer "Edit object
#<ede-proj-target-makefile-program hello>" but when editing the ldlibs
here I get an error on [Accept] or [Apply]:

Debugger entered--Lisp error: (invalid-slot-type
ede-proj-target-makefile-program compiler (or null symbol) ("talk"))
  signal(invalid-slot-type (ede-proj-target-makefile-program compiler
  (or null symbol) ("talk")))
  eieio-validate-slot-value(ede-proj-target-makefile-program 10 ("talk")
  compiler)
  eieio-oset([object ede-proj-target-makefile-program "hello" nil
  "hello" "" ("hello.c") nil nil nil nil nil "Makefile" t ("debug"
  ("CFLAGS" . "-g") ("LDFLAGS" . "-g")) nil nil nil] compiler ("talk"))
[...]

cheers
ssacha
-- 
Sascha Wilde
We're Germans and we use Unix. That's a combination of two 
demographic groups known to have no sense of humour whatsoever.
  -- Hanno Mueller in de.comp.os.unix.programming