Error while installing slipstreamed vlited ultimate 64

[Audiovore]

I get this error when trying to upgrade a vlited non-sp1 ultimate 64 installation.

"Windows Installation encountered an unexpected error. Verify that the installation sources are accessible, and restart the installation.

Error code: 0xC0000005"

It will just loop back to this after restart, but I can do setup rollback. I've tried it using a mounted image, and with a burned disc.

Any thoughts?

[JatinBeniwal]

try to burn iso at very low speed.