Building errors

[<muadib in gr>]

Greetings,
  I got a Tarball of GTK+-2.4.9 and I have the following problem compiling it: While ./configure returns with no errors, 'make' at the enc returns the following: 

failed to load "./stock_add_16.png": Couldn't recognize the image file format for file './stock_add_16.png'
make[3]: *** [gtkstockpixbufs.h] Error 1
make[3]: Leaving directory `/home/nang/gtk+-2.4.9/gtk/stock-icons'
make[2]: *** [install-recursive] Error 1
make[2]: Leaving directory `/home/nang/gtk+-2.4.9/gtk'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/home/nang/gtk+-2.4.9/gtk'
make: *** [install-recursive] Error 1


I run on Debian, kernel 2.4.27, Duron at 700MHz, 384Mb RAM.

Thanks!