system configuration error -2147220614

I'm trying to write a program to use the system configuration vi's for my real time units (sbRio 9602).  When I'm trying to set the hostname it throws an error -2147220614 which is an illegal character in the host name, but funny thing I could set the hostname with the only api's in labview 2011.  

The hostname I'm trying to set is TS1.5, which I can use my old app and set it to that hostname, so, not for sure why it doesn't work here.  This is just an example, seems like lots of stuff you would think would work doesn't.

I am using LV 2012 sp1.

Thanks,

Eric.