. source = http://opensimulator.org/cgi-bin/viewcvs.cgi/tags/0.5.0-release.tar.gz?view=tar . i ran 'sh runprebuild.sh' before running nant . see below for info about packages i'm using . environment: linux debian, repositories: .. deb http://ftp.it.debian.org/debian/ unstable main contrib non-free .. deb http://security.debian.org/ stable/updates main contrib non-free .. deb http://security.debian.org testing/updates main [nant] /home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/OpenSim.Region.Terrain.BasicTerrain.dll.build build Buildfile: file:///home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/OpenSim.Region.Terrain.BasicTerrain.dll.build Target framework: Mono 2.0 Profile Target(s) specified: build build: [echo] Build Directory is /home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/bin/Debug [csc] Compiling 25 files to '/home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/bin/Debug/OpenSim.Region.Terrain.BasicTerrain.dll'. [csc] /home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/TerrainEngine.cs(682,31): error CS0117: `libTerrain.Channel' does not contain a definition for `AerobicErosion' [csc] /home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Channel.cs(35,19): (Location of the symbol related to previous error) [csc] /home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/TerrainEngine.cs(704,20): warning CS0162: Unreachable code detected [csc] Compilation failed: 1 error(s), 1 warnings BUILD FAILED - 0 non-fatal error(s), 3 warning(s) /home/obscure/opensim/opensim-0.5/0.5.0-release/OpenSim/Region/Terrain.BasicTerrain/OpenSim.Region.Terrain.BasicTerrain.dll.build(10,10): External Program Failed: /usr/lib/mono/2.0/gmcs.exe (return code was 1) Total time: 2.3 seconds. BUILD FAILED Nested build failed. Refer to build log for exact reason. Total time: 9.4 seconds. ################################################################################### $ dpkg -l | grep mono ii libmono-accessibility1.0-cil 1.2.6+dfsg-5 Mono Accessibility library ii libmono-accessibility2.0-cil 1.2.6+dfsg-5 Mono Accessibility library ii libmono-addins-gui0.2-cil 0.3-2 GTK# frontend library for Mono.Addins ii libmono-addins0.2-cil 0.3-2 addin framework for extensible CLI applicati ii libmono-cairo1.0-cil 1.2.6+dfsg-5 Mono Cairo library ii libmono-cairo2.0-cil 1.2.6+dfsg-5 Mono Cairo library ii libmono-cecil0.5-cil 0.5-2 library to generate and inspect CIL assembli ii libmono-corlib1.0-cil 1.2.6+dfsg-5 Mono core library (1.0) ii libmono-corlib2.0-cil 1.2.6+dfsg-5 Mono core library (2.0) ii libmono-data-tds1.0-cil 1.2.6+dfsg-5 Mono Data library ii libmono-data-tds2.0-cil 1.2.6+dfsg-5 Mono Data Library ii libmono-dev 1.2.6+dfsg-5 libraries for the Mono JIT - Development fil ii libmono-i18n2.0-cil 1.2.6+dfsg-5 Mono I18N libraries (2.0) ii libmono-microsoft-build2.0-cil 1.2.5.1-1 Mono Microsoft.Build libraries ii libmono-microsoft7.0-cil 1.2.6+dfsg-5 Mono Microsoft libraries ii libmono-microsoft8.0-cil 1.2.6+dfsg-5 Mono Microsoft libraries ii libmono-peapi1.0-cil 1.2.6+dfsg-5 Mono PEAPI library ii libmono-peapi2.0-cil 1.2.6+dfsg-5 Mono PEAPI library ii libmono-relaxng1.0-cil 1.2.6+dfsg-5 Mono Relaxng library ii libmono-security1.0-cil 1.2.6+dfsg-5 Mono Security library ii libmono-security2.0-cil 1.2.6+dfsg-5 Mono Security library ii libmono-sharpzip0.84-cil 1.2.6+dfsg-5 Mono SharpZipLib library ii libmono-sharpzip2.84-cil 1.2.6+dfsg-5 Mono SharpZipLib library ii libmono-system-data1.0-cil 1.2.6+dfsg-5 Mono System.Data library ii libmono-system-data2.0-cil 1.2.6+dfsg-5 Mono System.Data Library ii libmono-system-runtime1.0-cil 1.2.6+dfsg-5 Mono System.Runtime library ii libmono-system-runtime2.0-cil 1.2.6+dfsg-5 Mono System.Runtime Library ii libmono-system-web1.0-cil 1.2.6+dfsg-5 Mono System.Web library ii libmono-system-web2.0-cil 1.2.6+dfsg-5 Mono System.Web Library ii libmono-system1.0-cil 1.2.6+dfsg-5 Mono System libraries (1.0) ii libmono-system2.0-cil 1.2.6+dfsg-5 Mono System libraries (2.0) ii libmono-winforms1.0-cil 1.2.6+dfsg-5 Mono System.Windows.Forms library ii libmono-winforms2.0-cil 1.2.5.1-1 Mono System.Windows.Forms library ii libmono0 1.2.6+dfsg-5 libraries for the Mono JIT ii libmono1.0-cil 1.2.6+dfsg-5 Mono libraries (1.0) ii libmono2.0-cil 1.2.6+dfsg-5 Mono libraries (2.0) ii mono-common 1.2.6+dfsg-5 common files for Mono ii mono-gac 1.2.6+dfsg-5 Mono GAC tool ii mono-gmcs 1.2.6+dfsg-5 Mono C# 2.0 and C# 3.0 compiler for CLI 2.0 ii mono-jit 1.2.6+dfsg-5 fast CLI JIT/AOT compiler for Mono ii mono-mcs 1.2.6+dfsg-5 Mono C# compiler for CLI 1.1 ii mono-runtime 1.2.6+dfsg-5 Mono runtime ii monodevelop 0.14+dfsg-3 C#/Boo/Java/Nemerle/ILasm/ASP.NET Developmen ii monodevelop-nunit 0.14+dfsg-3 NUnit plugin for MonoDevelop ii monodoc-base 1.2.6-3 shared MonoDoc binaries ii monodoc-manual 1.2.6-3 compiled XML documentation from the Mono pro