Unity 5.4.0 SteamVR 1.2.1 Util.cs error

Hello,

I'm running Unity 5.4.0f3 and SteamVR 1.2.1.

I did a web search without much help.

I just updated SteamVR to 1.2.1 but am seeing a compile error in the Util.cs file as such:

"Assets/SteamVR/InteractionSystem/Core/Scripts/Util.cs(538,33): error CS0119: Expression denotes a `variable', where a `method group' was expected"

The specific line in Util.cs is:
I know what the error means but correcting it has eluded me.

Any suggestions?

Thanks

J