Resolution:
This failure can occur if the configured error directory is not on the same file system as the as the polled directory. BC tries to "move" the file from the polled directory to the error directory rather than "copy" it. Because of operating system constraints, files can not be "moved" from one file system to another.To resolve the issue, make sure that the error directory resides on the same file system as the polled directory.  You can verify this by the use of the "mount" command which will show what file system to which the directories are mounted.