I was installed the idl7.1 on fedora 11,idlde cannot work, but idl is work on command line. The ldd lib* in bin.linux.x86 is libcairo-swt.so:     linux-gate.so.1 =>  (0x00b0e000)     libXrender.so.1 => /usr/lib/libXrender.so.1 (0x00e46000)     libX11.so.6 => /usr/lib/libX11.so.6 (0x00110000)     libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x0023f000)     libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00bed000)     libz.so.1 => /lib/libz.so.1 (0x0036f000)     libm.so.6 => /lib/libm.so.6 (0x00272000)     libc.so.6 => /lib/libc.so.6 (0x00382000)     libxcb.so.1 => /usr/lib/libxcb.so.1 (0x0029a000)     libdl.so.2 => /lib/libdl.so.2 (0x00caa000)     libexpat.so.1 => /lib/libexpat.so.1 (0x00b8f000)     /lib/ld-linux.so.2 (0x008b7000)     libXau.so.6 => /usr/lib/libXau.so.6 (0x002ec000) libidl_bml.so:     linux-gate.so.1 =>  (0x004d4000)     libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x009a1000)     libm.so.6 => /lib/libm.so.6 (0x00bae000)     libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00d5b000)     libc.so.6 => /lib/libc.so.6 (0x00110000)     /lib/ld-linux.so.2 (0x00736000) libidl_dml.so:     linux-gate.so.1 =>  (0x008e3000)     libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00b1c000)     libm.so.6 => /lib/libm.so.6 (0x009cb000)     libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00c29000)     libc.so.6 => /lib/libc.so.6 (0x00cf8000)     /lib/ld-linux.so.2 (0x0037b000) libidl_gmem.so:     linux-gate.so.1 =>  (0x00edb000)     libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00575000)     libm.so.6 => /lib/libm.so.6 (0x00c6a000)     libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00d60000)     libc.so.6 => /lib/libc.so.6 (0x00110000)     /lib/ld-linux.so.2 (0x009da000) libidl_jdml.so:     linux-gate.so.1 =>  (0x00b23000)     libidl_dml.so => not found     librt.so.1 => /lib/librt.so.1 (0x00d63000)     libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x0082e000)     libdl.so.2 => /lib/libdl.so.2 (0x00c43000)     libc.so.6 => /lib/libc.so.6 (0x006ab000)     libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00145000)     libm.so.6 => /lib/libm.so.6 (0x00232000)     libpthread.so.0 => /lib/libpthread.so.0 (0x0039e000)     /lib/ld-linux.so.2 (0x0050b000) and my java-version is:  java-1.5.0-gcj-1.5.0.0-28.fc11.x86_64 eclipse is :eclipse-jdt.x86_64 1:3.4.2-13.fc11  eclipse-platform.x86_64 1:3.4.2-13.fc11   eclipse-rcp.x86_64 1:3.4.2-13.fc11  eclipse-swt.x86_64 1:3.4.2-13.fc11 I don't know why cause this problem,please help me to solve it. Thank you! Minnie