Invalid access to memory location. (Exception from HRESULT: 0x800703E6)

Hi All,

We have upgraded a EV server from version 9.0.4 to 10.0.4 without any issues. I am now trying to upgrade the indexes and I keep getting these warnings in the event logs,

Log Name:      Symantec Enterprise Vault
Source:        Enterprise Vault
Date:          2015/07/23 11:09:39 AM
Event ID:      41315
Task Category: Index Query Server
Level:         Warning
Keywords:      Classic
User:          N/A

Description:
Invalid access to memory location. (Exception from HRESULT: 0x800703E6)

For more information, see Help and Support Center at http://entced.symantec.com/entt?product=ev&languag...
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Enterprise Vault " />
    <EventID Qualifiers="0">41315</EventID>
    <Level>3</Level>
    <Task>134</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-07-23T09:09:39.000000000Z" />
    <EventRecordID>20660007</EventRecordID>
    <Channel>Symantec Enterprise Vault</Channel>
    <Security />
  </System>
  <EventData>
    <Data>Invalid access to memory location. (Exception from HRESULT: 0x800703E6)</Data>
  </EventData>
</Event>

Also the index upgrade are failing.

not sure what I have might have missed during the upgrade or if their is another problem?

Any help would be greatly appreciated.