Can't import OVA

This question may be more suited for one of the vSphere forums, but I thought I'd try here as well.  When I try to import an OVA using the vSphere client, I get an error.  The error says:

The following manifest file entry (line 3) is invalid. 

My manifest file (.mf) is only 2 lines long.  Also, if I unpack the OVA using a tool like winrar and then try to import OVF, everything works flawlessly.

Also, the import of the OVA works fine under ovftool as well.  That leads me to believe that there isn't anything actually wrong with the manifest file. 

Any ideas or thoughts?  Thanks.