I have faced the same problem. It seems that
\documentclass[xcolor*pst]{beamer}does the tricks. You have to choose between "xcolor=pst" or "xoclor*pst", depending on your xcolor version. J. -- compile error with xcolor=pst option https://launchpad.net/bugs/55763 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
