Hi, I was wondering whether anyone has successfully installed analysis on the following system: Dual Pro 64bit Xeon processors (x86_64) with 1GB of ram They are running Fedora Core 4 the script seems to have a problem finding the x11 libraries, this is the error message from the python install c++ -pthread -Xlinker -export-dynamic -o python \ Modules/python.o \ libpython2.4.a -lpthread -ldl -lutil -L/usr/local/bin/ccpnmr/tcl8.3/lib -L/usr/local/bin/ccpnmr/tk8.3/lib -L/usr/X11R6/lib -ltcl8.3 -ltk8.3 -lX11 -lm /usr/bin/ld: skipping incompatible /usr/X11R6/lib/libX11.so when searching for -lX11 /usr/bin/ld: skipping incompatible /usr/X11R6/lib/libX11.a when searching for -lX11 /usr/bin/ld: cannot find -lX11 collect2: ld returned 1 exit status make: *** [python] Error 1 c++ -pthread -Xlinker -export-dynamic -o python \ Modules/python.o \ libpython2.4.a -lpthread -ldl -lutil -L/usr/local/bin/ccpnmr/tcl8.3/lib -L/usr/local/bin/ccpnmr/tk8.3/lib -L/usr/X11R6/lib -ltcl8.3 -ltk8.3 -lX11 -lm /usr/bin/ld: skipping incompatible /usr/X11R6/lib/libX11.so when searching for -lX11 /usr/bin/ld: skipping incompatible /usr/X11R6/lib/libX11.a when searching for -lX11 /usr/bin/ld: cannot find -lX11 collect2: ld returned 1 exit status make: *** [python] Error 1 any help would be appreciated cheers, Jo Claridge IFS Massey University