I'm having a problem with the ultraNumeric Editor with the following settings:

this.ultraNumericEditor1.AlwaysInEditMode = true;

this.ultraNumericEditor1.FormatString = "###.# MHz";

this.ultraNumericEditor1.MaskClipMode = Infragistics.Win.UltraWinMaskedEdit.MaskMode.Raw;

this.ultraNumericEditor1.MaxValue = 600;

this.ultraNumericEditor1.Name = "ultraNumericEditor1";

this.ultraNumericEditor1.PromptChar = ' ';

this.ultraNumericEditor1.SpinButtonDisplayStyle = Infragistics.Win.ButtonDisplayStyle.Always;

this.ultraNumericEditor1.TabIndex = 0;

 This will throw a System.FormatException before the form displays complaining that the input string was not in a correct format.  If I remove the SpinIncrement settting then everything is fine.  What I would like to do is use the SpinIncrement to increment the number by some fractional amount, like 1.5.  Am I mis-interpreting the SpinIncrement here?  This only seems to appear when using the literals? in the MaskInput and FormatString.  The following code works fine:

this.ultraNumericEditor1.FormatProvider = new System.Globalization.CultureInfo("en-US");

this.ultraNumericEditor1.Location = new System.Drawing.Point(124, 73);

this.ultraNumericEditor1.MaskInput = "nnn.n";

this.ultraNumericEditor1.MinValue = 0;

this.ultraNumericEditor1.NumericType = Infragistics.Win.UltraWinEditors.NumericType.Double;

this.ultraNumericEditor1.Size = new System.Drawing.Size(100, 21);

this.ultraNumericEditor1.SpinIncrement = 1.5;

this.ultraNumericEditor1.TabIndex = 0;

Is there a way to get this to work the way I want?

Thanks