Cannot enable a save button on c# WPF Project

I work on a C# project that I am not the author. I have to maintain the solution.

So, it is an UI for another project. The other project work correctly. This UI permits to set the configuration of the program and to run it.

I have an issue with the save button on the UI. This button is disabled when I run the UI. If I change something on the UI, the save button would be set enabled. If I click on the button, it would be set disabled.

Because this project has been created several years ago (~ 2015), I have a former build which work (save button is enabled and disabled correctly). But now, without any changes on the program, when I build the program, the button doesn't set enabled.

I think I have an issue with packages but I don't find a solution. I use these packages :

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="CommonServiceLocator" version="1.2" targetFramework="net452" />
  <package id="Expression.Blend.Sdk3" version="1.0.1340.1" targetFramework="net452" />
  <package id="Prism" version="5.0.0" targetFramework="net452" />
  <package id="Prism.Composition" version="5.0.0" targetFramework="net452" />
  <package id="Prism.Interactivity" version="5.0.0" targetFramework="net452" />
  <package id="Prism.Mvvm" version="1.0.0" targetFramework="net452" />
  <package id="Prism.PubSubEvents" version="1.0.0" targetFramework="net452" />
</packages>

Also, I have this on the Output window :

'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\firstname.lastname\Desktop\Photoshop Processing\ImgProcPhotoshopUI\ImgProcPhotoshopUI\bin\Debug\test\ImgProcPhotoshopUI.exe'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\PresentationFramework\v4.0_4.0.0.0__31bf3856ad364e35\PresentationFramework.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\WindowsBase\v4.0_4.0.0.0__31bf3856ad364e35\WindowsBase.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_64\PresentationCore\v4.0_4.0.0.0__31bf3856ad364e35\PresentationCore.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xaml\v4.0_4.0.0.0__b77a5c561934e089\System.Xaml.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\Remote Debugger\x64\Runtime\Microsoft.VisualStudio.Debugger.Runtime.dll'. 
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\Users\firstname.lastname\Desktop\Photoshop Processing\ImgProcPhotoshopUI\ImgProcPhotoshopUI\bin\Debug\test\Microsoft.Practices.Prism.PubSubEvents.dll'. Cannot find or open the PDB file.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\PresentationFramework.Aero2\v4.0_4.0.0.0__31bf3856ad364e35\PresentationFramework.Aero2.dll'. Symbols loaded.
Exception thrown: 'System.IO.FileNotFoundException' in mscorlib.dll
Exception thrown: 'System.IO.FileNotFoundException' in mscorlib.dll
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'Microsoft.GeneratedCode'. 
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\PresentationFramework-SystemXml\v4.0_4.0.0.0__b77a5c561934e089\PresentationFramework-SystemXml.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\UIAutomationTypes\v4.0_4.0.0.0__31bf3856ad364e35\UIAutomationTypes.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\UIAutomationProvider\v4.0_4.0.0.0__31bf3856ad364e35\UIAutomationProvider.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\Users\firstname.lastname\Desktop\Photoshop Processing\ImgProcPhotoshopUI\ImgProcPhotoshopUI\bin\Debug\test\Ookii.Dialogs.Wpf.dll'. Cannot find or open the PDB file.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\PresentationFramework-SystemCore\v4.0_4.0.0.0__b77a5c561934e089\PresentationFramework-SystemCore.dll'. Symbols loaded.
System.Windows.Data Error: 40 : BindingExpression path error: 'canRun' property not found on 'object' ''RunViewModel' (HashCode=28619382)'. BindingExpression:Path=canRun; DataItem='RunViewModel' (HashCode=28619382); target element is 'Button' (Name=''); target property is 'IsEnabled' (type 'Boolean')
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\Users\firstname.lastname\AppData\Local\Temp\VisualStudio.XamlDiagnostics.10388\Microsoft.VisualStudio.DesignTools.WpfTap.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\SMDiagnostics\v4.0_4.0.0.0__b77a5c561934e089\SMDiagnostics.dll'. Symbols loaded.
'ImgProcPhotoshopUI.exe' (CLR v4.0.30319: ImgProcPhotoshopUI.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Internals\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Internals.dll'. Symbols loaded.
The program '[10388] ImgProcPhotoshopUI.exe' has exited with code -1 (0xffffffff).