Faulting application vmtoolsd.exe (2008 R2 64 Terminal Server)

I would love to know if anybody has a fix for this one. I've been getting the below error randomly on various terminal users sessions and can't seem to get it fixed. The only issue seems to be the error itself, the TS works fine, the VM works fine, it's just the error and the reason behind it I can't get fixed.

Here is the background:

Created a new 2008 R2 64 virtual machine on Esxi 5 and all was well. Installed VMTools first thing and went about updating the server, added to the domain, added the Terminal Server role and deployed. Well sometime later random terminal users started getting the tools error below popping up when they connect. The faulting module always appears to be 'unity.dll' and I thought maybe there was a conflict with it and DEP on the server but it doesn't look like Unity is anything more than a .dll.

The only related solution I found online was to uninstall VMTools of course and reinstall, no help there but also some said to reinstall VMTools on the TS in application-install mode and that's what I tried last. It thought that had done the trick because I hadn't seen the error in over a week but this morning two users reported the popup message again.

Thanks for any help,

Andy

Log Name:      Application

Source:        Application Error

Date:          4/3/2012 8:06:59 AM

Event ID:      1000

Task Category: (100)

Level:         Error

Keywords:      Classic

User:          N/A

Computer:      termserv1

Description:

Faulting application name: vmtoolsd.exe, version: 8.6.0.6261, time stamp: 0x4dee27c3

Faulting module name: unity.dll, version: 8.6.0.6261, time stamp: 0x4dee27f9

Exception code: 0xc0000094

Fault offset: 0x0000000000010408

Faulting process id: 0x2c68

Faulting application start time: 0x01cd1198770f3551

Faulting application path: C:\Program Files\VMware\VMware Tools\vmtoolsd.exe

Faulting module path: C:\Program Files\VMware\VMware Tools\plugins\vmusr\unity.dll

Report Id: e5062654-7d8d-11e1-b1f0-000c29ac9073

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

  <System>

    <Provider Name="Application Error" />

    <EventID Qualifiers="0">1000</EventID>

    <Level>2</Level>

    <Task>100</Task>

    <Keywords>0x80000000000000</Keywords>

    <TimeCreated SystemTime="2012-04-03T13:06:59.000000000Z" />

    <EventRecordID>6196</EventRecordID>

    <Channel>Application</Channel>

    <Computer>termserv1</Computer>

    <Security />

  </System>

  <EventData>

    <Data>vmtoolsd.exe</Data>

    <Data>8.6.0.6261</Data>

    <Data>4dee27c3</Data>

    <Data>unity.dll</Data>

    <Data>8.6.0.6261</Data>

    <Data>4dee27f9</Data>

    <Data>c0000094</Data>

    <Data>0000000000010408</Data>

    <Data>2c68</Data>

    <Data>01cd1198770f3551</Data>

    <Data>C:\Program Files\VMware\VMware Tools\vmtoolsd.exe</Data>

    <Data>C:\Program Files\VMware\VMware Tools\plugins\vmusr\unity.dll</Data>

    <Data>e5062654-7d8d-11e1-b1f0-000c29ac9073</Data>

  </EventData>

</Event>