so i downloaded rosegarden source. i installed all the depencies and the "$ ./configure" command told me that all is ok. but when i give the command "$ make" it tells me this error: ---------------- [...] Colour.C:166: error: explicit qualification in declaration of `Rosegarden::Colour Rosegarden::getCombinationColour(const Rosegarden::Colour&, const Rosegarden::Colour&)' make[2]: *** [Colour.lo] Error 1 make[2]: Leaving directory `/home/bobo/src/rosegarden-4-1.0/base' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/bobo/src/rosegarden-4-1.0' make: *** [all] Error 2 ------------------ i don't know why.