I am experiencing a very odd problem with Cubase LE 5 on Windows 7 using a TASCAM US-600 interface. I have imported 4 WAV files into 4 different channels in my project. Two of the channels will play normally (say channel 1 and 2), but the other two (channels 3 and 4) will not produce sound most of the time but some sporadic white noise and crackling. If I shutdown Cubase and restart it, I reload the project and then the same problem occurs but not with the same 2 channels, sometimes channels 1 and 2, or channels 1 and 3 will fail, it's random. Bottom line is that the behavior is inconsistent every time I restart Cubase and I have not been able to play more than 2 channels at once using these WAV files. I know it's not a problem with the WAV files themselves because if I open each channel using the Sample Editor window they all play well there, but they won't play in the main Project window.
I hope that was somewhat clear and that someone can shed some light on this problem. I can't do any editing until I pass this road block. Love the software, but this problem has me at a stand still.