diff --git a/src/common/scriptmanager.cpp b/src/common/scriptmanager.cpp
index e2894f81..0572112c 100755
--- a/src/common/scriptmanager.cpp
+++ b/src/common/scriptmanager.cpp
@@ -307,6 +307,10 @@ std::tuple<QString, bool> ScriptManager::executeString(const QString &s)
 {
     Q_ASSERT(m_engine);
 
+    // Evaluating 's' via QQmlExpression would be straight forward, but this is problematic due
+    // to QTBUG-33514 (singletons are not available inside QQmlExpressions) and BrickStore relying
+    // heavily on singletons.
+
     const char *script =
             "import BrickStore\n"
             "import BrickLink\n"
@@ -315,20 +319,32 @@ std::tuple<QString, bool> ScriptManager::executeString(const QString &s)
             "    property var bl: BrickLink\n"
             "    property var bs: BrickStore\n"
             "    property string help: \"Use 'bl'/'bs' to access the BrickLink/BrickStore singletons\"\n"
+            "    property var __result\n"
+            "    property var __error\n"
+            "    Component.onCompleted: {\n"
+            "        try { __result = function() { return ${SCRIPT} }() }\n"
+            "        catch (error) { __error = error }\n"
+            "    }\n"
             "}\n";
 
     QQmlComponent component(m_engine);
-    component.setData(script, QUrl());
-    if (component.status() == QQmlComponent::Error)
-        return { u"JS compile error: "_qs + component.errorString(), false };
+    component.setData(QByteArray(script).replace("${SCRIPT}", s.toUtf8()), QUrl());
+    if (component.status() == QQmlComponent::Error) {
+        QStringList errorStrings;
+        const auto errors = component.errors();
+        errorStrings.reserve(errors.size());
+        for (const auto &e : errors)
+            errorStrings << e.description();
+        return { u"JS compile error: "_qs + errorStrings.join(u", "_qs), false };
+    }
     m_rootObject = component.create();
 
-    QQmlExpression e(m_engine->rootContext(), m_rootObject, s);
+    QQmlExpression e(m_engine->rootContext(), m_rootObject, u"if (__error) throw __error; __result"_qs);
     bool isUndefined = false;
     auto result = e.evaluate(&isUndefined);
 
     if (e.hasError())
-        return { e.error().toString(), false };
+        return { e.error().description(), false };
     else if (isUndefined)
         return { QString { }, true };
     else
diff --git a/src/desktop/developerconsole.cpp b/src/desktop/developerconsole.cpp
index b0dfb9e0..d2e09725 100755
--- a/src/desktop/developerconsole.cpp
+++ b/src/desktop/developerconsole.cpp
@@ -74,7 +74,8 @@ DeveloperConsole::DeveloperConsole(const QString &prompt,
                 m_history.removeAll(cmd);
                 m_history.append(cmd);
             } else {
-                m_log->appendPlainText(u"ERROR: " + message);
+                m_log->appendHtml(uR"(<span style="color:#ff0000">ERROR</span>: <i>)"
+                                  + message + uR"(</i>)");
             }
             m_log->moveCursor(QTextCursor::End);
         }