hello Hugs Bugs! I had one small problem installing and running the latest graphics library (graphics-2.0.4) on Linux. Long story short: conflicting library files due to previous hugs installations. Old "NumExts.hs" shadowing new "NumExts.lhs" file. Short story long ;-) : runhugs -Pgraphics-2.0.4/lib/x11: graphics-2.0.4/demos/HelloWorld.hs yields the error ERROR "graphics-2.0.4/lib/x11/GraphicsWindow.hs" - Unknown entity "showHex" imported from module "NumExts" The problem was that there was an old "NumExts" library hanging on in the lib/exts dir # ls -lArt /usr/local/share/hugs/lib/exts/ total 964 -rw-r--r-- 1 root root 146 Apr 11 2001 NumExts.hs -rw-r--r-- 1 root root 4479 Jan 18 14:14 IOExts.hs -rw-r--r-- 1 root root 4769 Jan 18 14:14 HtmlBlockTable.lhs [...] -rw-r--r-- 1 root root 2252 Jan 18 14:14 NumExts.lhs [...] problem resolved by simply removing the offending "NumExts.hs" -- Jay Glascoe | Software Developer | COBITE