jde-jalopy.el: buffer is read-only

Hi,

when I try to use in jde-jalopy.el (cvs emacs) the function
jde-jalopy-buffer I get the following error:

apply: Buffer is read-only: #<buffer *jalopy-compilation*>

There were probably similar errors in other packages.

How can it be fixed?

Thanks.
--
Jiri Pejchal