I'm trying to create my own custom control in Aquasuite. I'm getting this error when I check the code:

---------------------------
Test result
---------------------------
One or more errors in XAML code found!

'Initialization of 'System.Windows.Setter' threw an exception.' Line number '80' and line position '27'.

Cannot locate resource 'content/images/aqualis_fill_10.png'.

This makes no sense as the image is in the images folder. It can find other images but not the new ones I added. Here's the XAML:

<UserControl
x:Name="this"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d" designHeight="50" designWidth="300">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="20"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>

<!--Simple databinding example-->
<!--1. Set up connection for this item (ie. temperature sensor)-->
<!--2. Bind values to your own usercontrol-->
<!--Binding example-->
<!--Content="{Binding ElementName=this, Path=DataContext.Value, FallbackValue=no data available}"-->

<!--default background-->
<Rectangle Grid.Row="0" Grid.RowSpan="1" Fill="#FF78949A" Opacity="1.0" />
<Rectangle Grid.Row="1" Grid.RowSpan="1" Fill="#FFF0F0F0" Opacity="1.0" />
<Rectangle Grid.Row="2" Grid.RowSpan="1" Fill="#FFF0F0F0" Opacity="1.0" />

<!--Content: binding to source value: -->
<!--Content: ElementName=this -->
<!--Content: Path=DataContext.Value, for connection to actual connected value -->
<Label
Content="{Binding ElementName=this, Path=DataContext.Value, FallbackValue=no data available}"
ContentStringFormat="Level: {0:F0} %"
Grid.Row="2"
Opacity="1.0"
Height="Auto"
Width="Auto"
Foreground="#FF000000"
FontSize="13"
FontFamily="Segoe UI"
FontWeight="Normal"
Margin="0,0,0,0"
Padding="0,0,0,0"
HorizontalAlignment="Center"
VerticalAlignment="Center" />

<!--Content: binding to source value: -->
<!--Content: ElementName=this -->
<!--Content: Path=DataContext.DataName, for connection to actual connected value name -->
<Label
Content="{Binding ElementName=this, Path=DataContext.DataName, FallbackValue=no data available}"
Grid.Row="0"
Opacity="1.0"
Height="Auto"
Width="Auto"
Foreground="#FFEEEEEE"
FontSize="11"
FontFamily="Segoe UI"
FontWeight="Normal"
Margin="3,0,0,0"
Padding="0,0,0,0"
HorizontalAlignment="Left"
VerticalAlignment="Center" />

<Image
Grid.Row="1"
Opacity="1.0"
Height="Auto"
Width="Auto"
Margin="5,5,5,5"
Stretch="Uniform"
StretchDirection="Both" >
<Image.Style>
<Style TargetType="{x:Type Image}">
<Setter Property="Source" Value="Content/images/aqualis_fill_20.png" />

<Style.Triggers>
<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=7, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_10.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=17, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_20.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=27, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_30.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=37, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_40.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=47, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_50.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=57, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_60.png"/>
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=67, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_70.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=77, Converter={StaticResource CompareSmalerConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_80.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=87, Converter={StaticResource CompareGreaterEqualConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_90.png" />
</DataTrigger>

<DataTrigger
Value="True"
Binding="{Binding ElementName=this, Path=DataContext.Value, ConverterParameter=97, Converter={StaticResource CompareGreaterEqualConverter}}">
<Setter Property="Source" Value="Content/images/aqualis_fill_100.png" />
</DataTrigger>
</Style.Triggers>
</Style>
</Image.Style>
</Image>
</Grid>
</UserControl>


And the contents of the images folder:

Directory of D:\Program Files\aquasuite\Content\images

03/15/2015 09:27 AM <DIR> .
03/15/2015 09:27 AM <DIR> ..
11/02/2012 11:52 AM 2,278 alarm_0.png
11/02/2012 11:52 AM 3,177 alarm_1.png
11/02/2012 11:51 AM 3,179 alarm_2.png
11/06/2012 07:58 AM 7,234 aquaduct_0.png
11/06/2012 07:57 AM 6,628 aquaduct_100.png
11/06/2012 07:58 AM 6,654 aquaduct_50.png
11/12/2012 09:27 AM 4,603 aquaduct_eco_240.png
11/12/2012 09:26 AM 5,623 aquaduct_eco_360.png
03/12/2015 08:15 PM 2,777 aqualis_fill_10.png
03/12/2015 08:26 PM 2,437 aqualis_fill_100.png
03/12/2015 08:20 PM 2,628 aqualis_fill_20.png
03/12/2015 08:20 PM 2,612 aqualis_fill_30.png
03/12/2015 08:21 PM 2,589 aqualis_fill_40.png
03/12/2015 08:22 PM 2,571 aqualis_fill_50.png
03/12/2015 08:23 PM 2,549 aqualis_fill_60.png
03/12/2015 08:23 PM 2,531 aqualis_fill_70.png
03/12/2015 08:24 PM 2,498 aqualis_fill_80.png
03/12/2015 08:25 PM 2,475 aqualis_fill_90.png
10/30/2012 06:39 AM 3,472 auswertung.png
10/30/2012 06:37 AM 4,905 fans.png
03/12/2015 08:37 PM 2,149 flow-impeller.png
03/12/2015 08:36 PM 1,859 flow-shell.png
11/06/2012 04:48 AM 3,210 flow.png
11/06/2012 04:48 AM 6,154 pressure.png
03/12/2015 08:39 PM 3,261 pump-impeller.png
03/12/2015 08:39 PM 3,781 pump-shell.png
11/02/2012 12:29 PM 6,146 pump.png
10/30/2012 06:34 AM 3,997 regler.png
11/02/2012 10:44 AM 3,546 relais_an.png
11/02/2012 10:44 AM 2,931 relais_aus.png
11/06/2012 05:24 AM 1,747 running_fan_black.png
10/30/2012 06:35 AM 4,817 sensor.png
11/02/2012 10:50 AM 1,143 stecker.png
33 File(s) 118,161 bytes
2 Dir(s) 87,318,470,656 bytes free

What am I missing?

Thanks! That solved the code check errors. That brings up a couple of follow up questions, plus there's new problem now.

1) Where/how did you find this syntax to use? I normally like finding and solving problems myself, so just wondering where you learned this syntax from.
2) Why is this syntax necessary for the images I added, but not for the factory installed images (aqualis_fill_20.png, aqualis_fill_50.png, aqualis_fill_100.png)?

Now it's displaying something, but it appears to be the wrong image. The reservoir is reading 48% right now, so I expected the control to show the aqualis_fill_50.png image. Instead it appears to be showing the aqualis_fill_80.png instead. Attached is updated XAML code plus a screen shot of what I am seeing on my screen as well as the two images so you can see the difference.

Thanks for your help!

P.S. Once I get this working properly I'll release it into the public domain.

I found the problem. There's more than one comparator in the original sample. It uses both CompareSmalerConverter & CompareGreaterEqualConverter. It seems it should use only CompareGreaterEqualConverter instead. I'll posted the complete custom control in a new thread.