Error on start up of GRBL

[armesalas]

LaserGrbl v6.2.1.0
Grbl v1.1f
Wrapper: UsbSerial
Win 7, Professional, 6.1.7601.65536, Service Pack 1 (7)
CLR: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll 4.0.30319.34209 built by: FX452RTMGDR

TypeOf exception [System.OverflowException]
Exception message [Value was either too large or too small for an Int32.]
Exception source [mscorlib], thread [Main Thread]
Exception method [Int32 ToInt32(System.Decimal)]

----------- stack trace -----------
at System.Decimal.ToInt32(Decimal d)
at LaserGRBL.JogForm.UpdateFMax_Tick(Object sender, EventArgs e) in E:\LaserGRBL\LaserGRBL\JogForm.cs:line 97
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)