Index: /trunk/src/VBox/Main/src-all/ExtPackManagerImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-all/ExtPackManagerImpl.cpp	(revision 74812)
+++ /trunk/src/VBox/Main/src-all/ExtPackManagerImpl.cpp	(revision 74813)
@@ -1811,5 +1811,5 @@
 
     ComPtr<IInternalProgressControl> pProgressControl(pProgress);
-    AssertReturn(!!pProgressControl, E_INVALIDARG);
+    AssertReturn(!!pProgressControl, (uint32)E_INVALIDARG);
     return pProgressControl->SetCurrentOperationProgress(uPercent);
 }
@@ -1831,5 +1831,5 @@
 
     ComPtr<IInternalProgressControl> pProgressControl(pProgress);
-    AssertReturn(!!pProgressControl, E_INVALIDARG);
+    AssertReturn(!!pProgressControl, (uint32)E_INVALIDARG);
     return pProgressControl->SetNextOperation(Bstr(pcszNextOperationDescription).raw(), uNextOperationWeight);
 }
@@ -1849,5 +1849,5 @@
 
     ComPtr<IInternalProgressControl> pProgressControl(pProgress);
-    AssertReturn(!!pProgressControl, E_INVALIDARG);
+    AssertReturn(!!pProgressControl, (uint32)E_INVALIDARG);
     return pProgressControl->WaitForOtherProgressCompletion(pProgressOther, cTimeoutMS);
 }
@@ -1866,5 +1866,5 @@
 
     ComPtr<IInternalProgressControl> pProgressControl(pProgress);
-    AssertReturn(!!pProgressControl, E_INVALIDARG);
+    AssertReturn(!!pProgressControl, (uint32)E_INVALIDARG);
 
     ComPtr<IVirtualBoxErrorInfo> errorInfo;