--- a/Framework/Messages/IObserver.h	Wed Sep 11 12:31:49 2019 +0200
+++ b/Framework/Messages/IObserver.h	Wed Sep 11 12:33:12 2019 +0200
@@ -45,10 +45,7 @@
       // remember this is panic-level code to track zombie object usage
       std::string fingerprint = Orthanc::Toolbox::GenerateUuid();
       const char* fingerprintRaw = fingerprint.c_str();
-      ORTHANC_ASSERT(strlen(fingerprintRaw) == 36);
-      ORTHANC_ASSERT(fingerprintRaw[36] == 0);
       memcpy(fingerprint_, fingerprintRaw, 37);
-      LOG(TRACE) << "IObserver(" << std::hex << this << std::dec << ")::IObserver : fingerprint_ == " << fingerprint_;
       broker_.Register(*this);
     }
 

--- a/Platforms/Wasm/Defaults.cpp	Wed Sep 11 12:31:49 2019 +0200
+++ b/Platforms/Wasm/Defaults.cpp	Wed Sep 11 12:33:12 2019 +0200
@@ -6,7 +6,9 @@
 #include <Framework/Deprecated/Viewport/WidgetViewport.h>
 #include <Applications/Wasm/StartupParametersBuilder.h>
 #include <Platforms/Wasm/WasmPlatformApplicationAdapter.h>
+#include <Framework/StoneInitialization.h>
 #include <Core/Logging.h>
+#include <sstream>
 
 #include <algorithm>
 
@@ -105,7 +107,8 @@
   }
 
   void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle viewport) {
-
+    printf("Initializing Stone\n");
+    OrthancStone::StoneInitialize();
     printf("CreateWasmApplication\n");
 
     application.reset(CreateUserApplication(broker));