Note: this is a wild guess as I'm not a programmer.

On Fri, May 27, 2011 at 9:58 AM, Sergio Cipolla <secipolla@gmail.com> wrote:
The gpicview error I think is related to the following warning when running ./autogen.sh

data/Makefile.am:23: `%'-style pattern rules are a GNU make extension

The cited line is:
%.ui: %.glade

and that's exactly where the copy is failing when running 'make'.