My 16G Cruzer will not allow me to remove it. Error states something is accessing the drive, but everything is closed. I couldn’t get it to stop last night and had to shut down computer. I had the U3 disabled. I enabled U3 and it worked fine, but tonight, but it’s back to the error message. I also have a 1G Cruzer that I am having problems accessing. This should be easy - what am I missing?