What version of Videopad? There's been no pattern linking crashes (rare) with the number of tracks.
Update to the latest version. For licensed users upgrades are free for up to six months from purchase date. After that, VP will continue to fully function but a fee will be required in order to register the newest. Retain your old install file and registration info..
VideoPad has been known to crash due to problems with older graphics card drivers. If you are experiencing frequent crashes then you should download and install the latest drivers for your graphics hardware and update to the latest version of DirectX.
AMD / ATI users: http://support.amd.com/us/gpudownload/Pages/index.aspx Intel users: https://downloadcenter.intel.com/default.aspx nVidia users: http://www.nvidia.com/Download/index.aspx?lang=en-us Update DirectX: http://support.microsoft.com/kb/179113