Installing .iso Knoppix DVD in Knoppix

[hansieb]

md5sum -c KNOPPIX_V7.4.0DVD-2014-08-01-EN.iso.md5
KNOPPIX_V7.4.0DVD-2014-08-01-EN.iso: FAILED
md5sum: WARNING: 1 computed checksum did NOT match

Remarks: 1 I could not copy the DVD-download (Error message) so: 2 This time I downloaded the .iso and .iso.md5 via Iceweasel (The knoppix browser)