I'm using the last available from bConverged: CalculiX_2_8_win_003.zip CalculiX for Windows 2.8, build 003 (60,352 kb) Posted 19 May 2015. This build includes CCX 2.8p2 (32 and 64 bit, both multi-thread), CGX 2.6.1, compiled help file, test cases and two CAD translation tools (VDA and ACIS to FBD). ...