diff --git a/demo/muon-monitor/build.gradle.kts b/demo/muon-monitor/build.gradle.kts
index ce4ea12a..0e0d1dab 100644
--- a/demo/muon-monitor/build.gradle.kts
+++ b/demo/muon-monitor/build.gradle.kts
@@ -10,7 +10,7 @@ group = "ru.mipt.npm"
 val ktorVersion: String by rootProject.extra
 
 kscience {
-//    useSerialization()
+    useSerialization()
     application()
 }
 
@@ -58,7 +58,7 @@ kotlin {
 }
 
 application {
-    mainClass.set("ru.mipt.npm.gradle.muon.monitor.server.MMServerKt")
+    mainClass.set("ru.mipt.npm.muon.monitor.server.MMServerKt")
 }
 
 distributions {
diff --git a/visionforge-plotly/src/commonMain/kotlin/hep/dataforge/vision/plotly/PlotlyPlugin.kt b/visionforge-plotly/src/commonMain/kotlin/hep/dataforge/vision/plotly/PlotlyPlugin.kt
index cba38c85..58f39f52 100644
--- a/visionforge-plotly/src/commonMain/kotlin/hep/dataforge/vision/plotly/PlotlyPlugin.kt
+++ b/visionforge-plotly/src/commonMain/kotlin/hep/dataforge/vision/plotly/PlotlyPlugin.kt
@@ -1,6 +1,7 @@
 package hep.dataforge.vision.plotly
 
 import hep.dataforge.context.PluginFactory
+import hep.dataforge.misc.DFExperimental
 import hep.dataforge.vision.Vision
 import hep.dataforge.vision.VisionForge
 import hep.dataforge.vision.VisionPlugin
@@ -22,6 +23,7 @@ internal val plotlySerializersModule = SerializersModule {
 /**
  * Ensure that [PlotlyPlugin] is loaded in the global [VisionForge] context
  */
+@DFExperimental
 public fun VisionForge.usePlotly() {
     plugins.fetch(PlotlyPlugin)
 }
\ No newline at end of file
diff --git a/visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidGroup.kt b/visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidGroup.kt
index 55dfd65b..77d4ee13 100644
--- a/visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidGroup.kt
+++ b/visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidGroup.kt
@@ -72,7 +72,7 @@ public class SolidGroup(
     }
 
     public companion object {
-        //public val PROTOTYPES_TOKEN = NameToken("@prototypes")
+        public val PROTOTYPES_TOKEN: NameToken = NameToken("@prototypes")
     }
 }