I was moving an RHEL6 64 bit VM to another host through vCenter converted standalone 4.0.1 build 161434 and I got the following error " Unable to obtain hardware information for the selected machine " .
I figure it out that the issue is due to the Guest Operating System version. RHEL 6 version is not supported with vConverter. The workaround is to edit the vm settings, change the GOS version to RHEL5 and move the machine. Once its moved , before powering on, change the version back to original version.