I purchased a large volume USB flash drive. Every time a try to copy files tis drive, I get an error message and then the Mac ejects the drive. I'm sorry, but i didn't save the error code/ So I have 2 issues: Can I somehow find a log of the errors received, and how can I correct this problem. I have tried copying large rules, such as Aperture, and get the error EVERY time. I need help from those more able to determine the problem than I am.