dnu restore error (Could not find part of a path..)

Anyone attempt using entity framework-beta8 migrations? Everytime I run the dnx ef command I get the following

"Error: . Please run dnu restore to generate a new lock file"

running dnu restore then gives the error

Could not find a part of the path "c:\users\Username\ .dnx\packages\Owin\1.0.0\Owin.1.0.0.nupkg.sha512

Any idea what's going wrong?

EDIT

Checking it now and the path on the C drive is 1.0 not 1.0.0..that seems to be part of the issue here. Not sure if it was the right thing to do but renaming the folders worked in the end