Hi Simon, > Actual error is "elf_resolve_symbol: could not resolve symbol > 'GetFamilyAndStyle__C5BFontPA64_cPA64_c'". I have been able to get some > simple apps to run in both R5 and Haiku - the doodle sample app for > instance worked fine. Other R5 apps generate the same linker error. I just tried it last night, WonderBrush definitely works. I don't build Haiku on Linux though - this is not a GCC 4 build of Haiku, is it? And you need to try with the R5 version of WonderBrush. HTH & Best regards, -Stephan