Maps compile fine on my 600 mhz P3 and my x86 notebook. They fail to compile on my AMD64 box. therion 0.3.9 configuration file: thconfig reading ... done reading source files ... done preprocessing database ... done scanning centreline tree ... done searching for centerline loops ... done calculating station coordinates ... done calculating basic statistics ... done processing extended elevation ... done processing references ... done selecting export objects ... done processing projection plan ... done average distortion: 2.14% writing walters_fold_cave_plan.pdf ... therion: error -- unknown exception Using: xtherion 0.3.9 Linux adrastea 2.6.13-gentoo-r3 #1 SMP Tue Nov 15 11:15:32 EST 2005 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ AuthenticAMD GNU/Linux Any ideas? Philip Schuchardt