Python.exe has stopped working during installation or upgrade to vCenter Server 6.0

If you happen to encounter the error “Python.exe has stopped working” during an upgrade or installation of vCenter Server you may have hit a known issue that VMware is working on resolving. To confirm you are hitting this known issue, reference the vminst.log and the upgradeRunner.log files. You should see the error messages below.
 
vminst.log (%temp%)

E: MonitorStatusFile: Process exited with a non-zero exit code; no status monitoring so assuming failure
E: LaunchUpgradeRunnerCommon: Failed to run pre-upgrade phase: "Z:\PFiles\VMware\CIS\python\python.exe" "Z:\PFiles\VMware\CIS\cis_upgrade_runner\UpgradeRunner.py" --mode=requirements --configFile="C:\Users\administrator\AppData\Local\Temp\UpgradeRunnerInput.json" --logDir="C:\Users\administrator\AppData\Local\Temp\vcsUpgrade"  --locale=en --outputFile="C:\Users\administrator\AppData\Local\Temp\UpgradeRunnerPreupgradeOutput.json"

 
upgradeRunner.log (vCenter_Support_Bundle\vcsUpgrade\)

ERROR __main__ Upgrade Runner has encountered an exception
Traceback (most recent call last):
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\UpgradeRunner.py", line 1285, in main
   components.repository = components.ComponentRepository(metadata, probedData)
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\py\model\components.py", line 119, in __init__
   self.components = _loadComponents(probingData, metadata)
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\py\model\components.py", line 187, in _loadComponents
   srcTargets = _buildTargets(probingData['source-components'], srcComponents)
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\py\model\components.py", line 251, in _buildTargets
   target = Target(host, platform)
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\py\model\components.py", line 81, in __init__
   self.isLocal = isLocalHost(self.address)
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\libs\sdk\networking_utils.py", line 148, in isLocalHost
   localIps = GetLocalIPs()
 File "Z:\PFiles\VMware\CIS\cis_upgrade_runner\libs\sdk\_win_utils.py", line 267, in GetLocalIPs
   ipAddr = adNode.ipAddress
AttributeError: 'LP_IP_ADDR_STRING' object has no attribute 'ipAddress'
Z ERROR __main__ Upgrade mode requirements failed

 
This issue is caused by a NIC on your vCenter Server having more than one IP address. To check if this is the case, go to Network Connections -> Ethernet (Right Click – Properties) -> Internet Protocol Version 4 (TCP/IPv4) (Right Click – Properties) -> Advanced
 

 
You will need to temporarily remove all but one IP address on the NIC, rerun the upgrade, and then you can add the IP address back once the installer is successful.
 
Source: http://kb.vmware.com/kb/2110912