HeatMapView fails to initialize

[YAMLcase]

SDR# studio version: v1.0.0.1890

I have a fresh install of SDR with no plugins installed and the plugin will not initialize.

error:

*** Plugin Load Error - 2022-08-23 08:44:39.449
Config Key   'HeatMap View'
Type         'SDRSharp.HeatMapView.HeatMapViewPlugin, SDRSharp.HeatMapView, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'
Message      ''
Stack Trace
   at SDRSharp.HeatMapView.HeatMapViewPlugin.Initialize(ISharpControl control)
   at SDRSharp.MainForm.InitializeSharpPlugins()

Plugins.xml:

<?xml version="1.0" encoding="utf-8" ?>
<sharpPlugins>
  <add key="HeatMap View" value="SDRSharp.HeatMapView.HeatMapViewPlugin,SDRSharp.HeatMapView" />
</sharpPlugins>