Occasionally, a bus-interrupt may cause Capture to drop out of record. If this happens, simply relaunch Capture. If the problem persists, restart the system and reopen the application. If you still cannot record for long periods of time, make sure you have optimized your computer for audio recording and have enabled the Legacy 1394 driver (Win7 only). If the issue is unresolvable, contact PreSonus Tech Support for more trouble-shooting help.