bought a brand new copy of RDR on sat. and have only been able to get it to play 3 times. it either freezes, quits to dashboard. and when i tried to install itto HD it took about 4-5 attempts. an kept stopping at 42-47%. eventually it installed but wouldnt let me play at first, although it did in the end. any workaround anyone knows of other than taking it back for a replacement??