Igor, Thank you for pointing me in the good direction. I checked the szap.c from Manu again and noticed that I had to change the declarations of the include files frontend.h and lnb.h (I copied them from the multiproto-tree to the same directory as szap.c). It seems to be that _#include <frontend.h>_ has a different meaning than _#include "frontend.h"_ (I am not familiair with C). This means for szap.c: #include "frontend.h" #include "version.h" #include "lnb.h" And for lnb.c: #include "lnb.h" This is it. After compiling szap works good and I get a lock for any channel! Thanks! Henk _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb