Can't connect to vCenter Server using PowerCLI Plugin

I'm getting this message in the logs when attempting to invoke a powerCLI script from orchestrator:

[2014-01-15 09:37:47.354] [I] PowerShellInvocationError: Errors found while executing script

Connect-VIServer : 1/15/2014 9:37:46 AM    Connect-VIServer        Exception of

type 'System.OutOfMemoryException' was thrown.   

At line:2 char:17

+ connect-viserver <<<<  -server vcenter1 -user broth -password

    + CategoryInfo          : NotSpecified: (:) [Connect-VIServer], ViError

    + FullyQualifiedErrorId : Client20_ConnectivityServiceImpl_Reconnect_Excep

   tion,VMware.VimAutomation.ViCore.Cmdlets.Commands.ConnectVIServer

(Dynamic Script Module name : invokeScript#14)

Any ideas?

Thanks