BrawlBox not wanting to create BRSTM files

[CryoraptorA303tm]

Upon importing a WAV file to convert to BRSTM, BrawlBox gives this error if I try to play the audio back:

Attempted to divide by zero.
at System.Audio.AudioBuffer.Update()
at System.Audio.AudioBuffer.Fill()
at System.Windows.Forms.BrstmConverterDialog.tmrUpdate_Tick(Object sender, EventArgs e)
at System.Windows.Forms.BrstmConverterDialog.Play()
at System.Windows.Forms.BrstmConverterDialog.btnPlay_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

If I ignore the warning and create the BRSTM anyway, BrawlBox will simply crash.

Any ideas why this is happening?