Dear Daniel,
I have been having trouble with the pst-fill package's "boxfill" (tiling) for some time when compiling with XeLaTeX.
pstricks for XeTeX is a limited subset of the full set for dvips. Please consider it is happy if pstricks for XeTeX works ok. If you need graphics by pstricks in XeTeX, please create a pdf image for the graphics in other process by dvips + ps2pdf, and include the image by XeTeX. Thanks, Akira -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex