Recently I rebuilt my computer with an SSD – do it they are fantastic.

Everything was bliss until it came time to render a project out of Nuke, It kept failing a few frames in.

“ok” I thought, it’s most likely a bug with the spanking new nuke 7 – downloaded and installed the latest build – no love.

I actually put this issue aside for a few weeks, but upon installing Unity 4 I hit the very same error when setting up a project.

No way I thought, this error is something else.

Solution: windows security can sometimes be abit vigorous.

For every drive:

Go to Computer select drive>properties>security tab

check under system and admin (maybe users) – if it doesn’t have it assign “full control” to that account – apply and restart.

Note: be careful in here, as with all things system related.

Fixed it for me, good luck!