On Tue, 2013-02-12 at 11:36 +0100, Mauro Sgroi wrote: > gipaw_main.o: In function `MAIN__': > gipaw_main.f90:(.text+0x59): undefined reference to `io_image_start_' I think you need to install the NEB package as well (it has been recently fixed) P. -- Paolo Giannozzi, IOM-Democritos and University of Udine, Italy