Hi, Graph-tool was manually compiled on a local cluster (based on RedHat) by a network admin. The python command import graph_tool works fine, but almost every other command results in an error related to "did not match C++ signature": For example, gtGraph=graph_tool.load_graph("yeast.graphml") (attached) results in: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/epd/lib/python2.7/site-packages/graph_tool/__init__.py", line 2702, in load_graph g.load(file_name, fmt, ignore_vp, ignore_ep, ignore_gp) File "/usr/local/epd/lib/python2.7/site-packages/graph_tool/__init__.py", line 2320, in load ignore_ep, ignore_gp) Boost.Python.ArgumentError: Python argument types in GraphInterface.read_from_file(GraphInterface, str, NoneType, str, list, list, list) did not match C++ signature: read_from_file(graph_tool::GraphInterface {lvalue}, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::api::object, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::list, boost::python::list, boost::python::list) Following some other posts in the mailing list, I've applied the ldd command and: ldd /usr/local/epd/lib/python2.7/site-packages/graph_tool/libgraph_tool_core.so linux-vdso.so.1 => (0x00007ffff7ffe000) libboost_iostreams.so.1.59.0 => /usr/lib64/libboost_iostreams.so.1.59.0 (0x00007ffff5c46000) libboost_python.so.5 => /usr/lib64/libboost_python.so.5 (0x00007ffff59f5000) libboost_regex.so.1.59.0 => /usr/lib64/libboost_regex.so.1.59.0 (0x00007ffff56df000) libboost_coroutine.so.1.59.0 => /usr/lib64/libboost_coroutine.so.1.59.0 (0x00007ffff54d4000) libCGAL.so.12 => /usr/local/cgal-releases-CGAL-4.9/build/release/lib/libCGAL.so.12 (0x00007ffff52af000) libexpat.so.1 => /lib64/libexpat.so.1 (0x00007ffff5087000) libstdc++.so.6 => /usr/local/gcc5.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.3.0/../../../../lib64/libstdc++.so.6 (0x00007ffff4cf8000) libm.so.6 => /lib64/libm.so.6 (0x00007ffff4a74000) libc.so.6 => /lib64/libc.so.6 (0x00007ffff46e0000) libgcc_s.so.1 => /usr/local/gcc5.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.3.0/../../../../lib64/libgcc_s.so.1 (0x00007ffff44c9000) libbz2.so.1 => /lib64/libbz2.so.1 (0x00007ffff42b8000) libz.so.1 => /usr/local/epd/lib/libz.so.1 (0x00007ffff409a000) librt.so.1 => /lib64/librt.so.1 (0x00007ffff3e91000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ffff3c74000) libpython2.6.so.1.0 => /usr/lib64/libpython2.6.so.1.0 (0x00007ffff38ce000) libicudata.so.42 => /usr/lib64/libicudata.so.42 (0x00007ffff2788000) libicui18n.so.42 => /usr/lib64/libicui18n.so.42 (0x00007ffff23f2000) libicuuc.so.42 => /usr/lib64/libicuuc.so.42 (0x00007ffff20a0000) libboost_context.so.1.59.0 => /usr/lib64/libboost_context.so.1.59.0 (0x00007ffff1e96000) libboost_thread.so.1.59.0 => /usr/lib64/libboost_thread.so.1.59.0 (0x00007ffff1c74000) libboost_chrono.so.1.59.0 => /usr/lib64/libboost_chrono.so.1.59.0 (0x00007ffff1a6d000) libboost_system.so.1.59.0 => /usr/lib64/libboost_system.so.1.59.0 (0x00007ffff1869000) libmpfr.so.1 => /usr/lib64/libmpfr.so.1 (0x00007ffff161c000) libgmp.so.3 => /usr/lib64/libgmp.so.3 (0x00007ffff13c1000) /lib64/ld-linux-x86-64.so.2 (0x0000003f14800000) libdl.so.2 => /lib64/libdl.so.2 (0x00007ffff11bc000) libutil.so.1 => /lib64/libutil.so.1 (0x00007ffff0fb9000) yeast.graphml <http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/file/n4026983/yeast.graphml> -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.