ovftool to VI: "No space left for device '#' on parent controller '#'" for IDE Disks

I have an OVF I'm trying to import into VI (ESX 3.5) and I'm getting the following error:

Error: OVF Package is not supported by target:
- Line 57: No space left for device '7' on parent controller '6'.

Here's the snippet of OVF:

      <Item>
        <rasd:Address>0</rasd:Address>
        <rasd:ElementName>IDE 0</rasd:ElementName>
        <rasd:InstanceID>6</rasd:InstanceID>
        <rasd:ResourceSubType>piix4</rasd:ResourceSubType>
        <rasd:ResourceType>5</rasd:ResourceType>
      </Item>
      <Item>
        <rasd:AddressOnParent>0</rasd:AddressOnParent>
        <rasd:ElementName>Harddisk disk1</rasd:ElementName>
        <rasd:HostResource>ovf:/disk/disk1</rasd:HostResource>
        <rasd:InstanceID>7</rasd:InstanceID>
        <rasd:Parent>6</rasd:Parent>
        <rasd:ResourceType>17</rasd:ResourceType>
      </Item>
      <Item>
        <rasd:Address>1</rasd:Address>
        <rasd:ElementName>IDE 1</rasd:ElementName>
        <rasd:InstanceID>8</rasd:InstanceID>
        <rasd:ResourceSubType>piix4</rasd:ResourceSubType>
        <rasd:ResourceType>5</rasd:ResourceType>
      </Item>

Thanks!

Mike