I record a screen capture and then stop the recording. Once the recording is stopped the preview window opens. In the preview window the entire video and audio capture is present and visible. However, once I save the capture to a file (.camrec), opening the saved file will have the complete audio capture but aproximately the last two minutes of the video will be truncated. I've tried it with a 79 minute capture and a 65 minute capture. In both cases only the last two minutes of video were lost. I have also performed much shorter captures (12 minutes, 15 minutes, and 18 minutes) and they worked fine. I am using Camtasia Studio 8.3.0 (build 1471) on a Windows 7 Enterprise (Version 6.1 (Build 7601: Service Pack 1)) platform.