Nils Scholl

Hi, i've been using cakewalk for several years now and never had this problem... it randomly appeared today. I can hear the already recorded instrument tracks (guitar and vocals). But when I try to record something via USB-interface there is no sound even though input monitoring and all being activated. The problem seems to appear during processing since I can see the gain indicator of the interface light up when receiving signal. Weird thing is the recorded stuff (recorded before the problem occured) being replayed correctly. I checked the audio and midi settings and everything seems to be correct... I don't know what to do, help!