Thank you Michael. yes. I have sometnihg with my system. yaourt and PKGBUILD are ok. I have to remove some lines about cwiid in ..libs/surfaces/wscript and it builds nicely. Now I have ardour3 installed. I am kinda new in using ardour. Till now I used ardour2 and I was happy. Are there some problems using ardour3 ? Because I see that it is 3.0rc2. [update] ahh. just now reinstalled from cwiid to cwiid-git and ardourd3 builds like a charm. thanks fero