When running ANSYS Polyflow 3.12 and you encounter the following error:

/Fluent.Inc/polyflow3.12.2/lnx86/bin/polyman: error while loading shared libraries: libgtk-1.2.so.0: cannot open shared object file: No such file or directory

this means that the older GTK+ libraries are missing. On CentOS 5.3, install the “libgtk+-1.2” package whereas on Debian, look for a package called “libgtk1.2”.