When I tried to import the VMware Sandbox image, I get this error:
The import failed because <PATH> did not pass OVF 
specification conformance or virtual hardware compliance checks.
Click
 Retry to relax OVF specification and virtual hardware compliance checks
 and try the import again, or click Cancel to cancel the import. If you 
retry the import, you might not be able to use the virtual machine in 
VMware Player.

I already checked MD5 code and the file is downloaded correctly.