Saving out Shader Varients gives an Error

[S. Houtzager]

Was Saving some presets in the Shader Variance Editor and when I went to save I kept getting this "out of range" message when my settings were not out of range.  You can see it on the image I linked to.  Then reopening the saved the shader shows an altered setting.

 

This happens for several shaders including Noise Factory, Marble, Scratches, Parquet. 

 

Using EI9.1 and Mavericks.

 

https://dl.dropboxusercontent.com/u/5048027/shader.png