Here is one of the task logs:
Session: Saturday, January 16, 2010 4:14:49 AM
Saturday, January 16, 2010 5:51:12 AM Error The process cannot access the file 'N:\Binaries\Y~~Zn_JLKZuKlg8ztUZKwxOoAc~u48qPj[jK1gNGsTYt,F5\' because it is being used by another process.