The message appears when no track is armed for recording and no audio input is set to record to a new track, so n-Track can't record anything.
You can either set the input channel to record to a new or existing track, in the popup menu that appears clicking on the second small circular button from the left, in the bottom part of the Recording Vumeter window (if closed you can open it with the View -> "Recording vu-meter" menu command).
Alternatively you can add a blank audio track (Add channel -> Add blank audio track), then click on the circular "rec-arm" button in the left part of the track, then select which input to record from in the popup menu.
Continue with GoogleContinue with FacebookPlease sign in to downloadSubmitSign in with your emailYour email addressYou already have an n-Track account. Please proceed to login to download.Your account has been created. Please check your email for your download linkYour account has been verified. You will now be redirected to your download page;
Your account has been verified. You will now be redirected to your download pageThere was an error verifying your account. Please try again, or login if you already have an accountI have reviewed the [TAG_PRIVACY_POLICY]Privacy policyCreate accountI want to receive emails with offers or promotions on n-Track productsCreate your n-Track accountYour n-Track account has been created. Please check your email to verify your account.