I am on Win 7 Ultimate x64. I know kaspersky was or is known to conflict with CCE. I know from past experience Nod32 under Win 7 conflicts as well. See here: http://forums.afterdawn.com/thread_view.cfm/737735 Now as I documented here I was able to resolve the problem by simply telling Nod32s real time scanner not to scan m2v files. Well I have just done an upgrade to some SSDs for my OS drive so I started with a fresh install of Win 7. I excluded M2V files as I documented in the other thread. That resolved the error: However I am now faced with a new error: http://img37.imageshack.us/img37/9593/ccey.jpg Now I have once again confirmed Nod32 is the culprit of this error as well. After lots of testing I decided to try disabling Nod32 to do a copy. With Nod32 disabled I no longer suffered the error stating "The handle is invalid." So does any one have an idea of how to fix this?