InvalidArgument thrown on InitiateFileTransferToGuest

[yairfrid]

Exception: pyVmomi.VmomiSupport.vmodl.fault.InvalidArgument: (vmodl.fault.InvalidArgument) { E dynamicType = , E dynamicProperty = (vmodl.DynamicProperty) [], E msg = 'A specified parameter was not correct: ', E faultCause = , E faultMessage = (vmodl.LocalizableMessage) [], E invalidProperty = E }

It works on another template, a Windows10 one, but the windows7 template just doesn't seem to like it for some reason, exact same code too..