xml error with LocalLBRule

When trying to view all the irules on one of my F5s I'm getting:

 

 

PS C:\Program Files (x86)\F5 Networks\iControlSnapIn> Get-f5.ltmrule

 

Get-F5.LTMRule : There is an error in XML document (248, 75).

 

At line:1 char:15

 

+ Get-f5.ltmrule <<<<

 

+ CategoryInfo : OpenError: (error:String) [Get-F5.LTMRule], InvalidOperationException

 

+ FullyQualifiedErrorId : 2,iControlSnapIn.CmdLet.LTM.Rule.GetLTMRule

 

 

 

 

 

 

this seems to work on another ltm pair that we have.

 

 

 

any ideas why i'm getting this or how to troubleshoot.