diff --git a/src/gui/applicationlauncherjob.h b/src/gui/applicationlauncherjob.h
--- a/src/gui/applicationlauncherjob.h
+++ b/src/gui/applicationlauncherjob.h
@@ -47,6 +47,14 @@
  * The job finishes when the application is successfully started. At that point you can
  * query the PID(s).
  *
+ * For error handling, either connect to the result() signal, or for a simple messagebox on error,
+ * you can do
+ * @code
+ *    auto *delegate = new KDialogJobUiDelegate;
+ *    delegate->setAutoErrorHandlingEnabled(true);
+ *    job->setUiDelegate(delegate);
+ * @endcode
+ *
  * @since 5.69
  */
 class KIOGUI_EXPORT ApplicationLauncherJob : public KJob
diff --git a/src/widgets/kpropertiesdialog.cpp b/src/widgets/kpropertiesdialog.cpp
--- a/src/widgets/kpropertiesdialog.cpp
+++ b/src/widgets/kpropertiesdialog.cpp
@@ -87,6 +87,7 @@
 
 #include <kauthorized.h>
 #include <KColorScheme>
+#include <KDialogJobUiDelegate>
 #include <kdirnotify.h>
 #include <kdiskfreespaceinfo.h>
 #include <kdesktopfile.h>
@@ -115,7 +116,7 @@
 #include <kseparator.h>
 #include <ksqueezedtextlabel.h>
 #include <kmimetypetrader.h>
-#include <krun.h>
+#include <KIO/ApplicationLauncherJob>
 #include <kio/desktopexecparser.h>
 #include <kacl.h>
 #include <kconfiggroup.h>
@@ -1106,7 +1107,7 @@
         sizelay->addWidget(d->m_sizeDetermineButton, 0);
         sizelay->addWidget(d->m_sizeStopButton, 0);
 
-        if (!QStandardPaths::findExecutable(QStringLiteral("filelight")).isEmpty()) {
+        if (KService::serviceByDesktopName(QStringLiteral("org.kde.filelight"))) {
             d->m_sizeDetailsButton = new QPushButton(i18n("Explore in Filelight"), d->m_frame);
             d->m_sizeDetailsButton->setIcon(QIcon::fromTheme(QStringLiteral("filelight")));
             connect(d->m_sizeDetailsButton, &QPushButton::clicked, this, &KFilePropsPlugin::slotSizeDetails);
@@ -1450,7 +1451,15 @@
 void KFilePropsPlugin::slotSizeDetails()
 {
     // Open the current folder in filelight
-    KRun::run((QStandardPaths::findExecutable(QStringLiteral("filelight"))), { properties->url() }, properties->window(), QStringLiteral("Filelight"), QStringLiteral("filelight"));
+    KService::Ptr service = KService::serviceByDesktopName(QStringLiteral("org.kde.filelight"));
+    if (service) {
+        auto *job = new KIO::ApplicationLauncherJob(service);
+        job->setUrls({ properties->url() });
+        job->start();
+        auto *delegate = new KDialogJobUiDelegate;
+        delegate->setAutoErrorHandlingEnabled(true);
+        job->setUiDelegate(delegate);
+    }
 }
 
 KFilePropsPlugin::~KFilePropsPlugin()