fixed file:/// on windows path

src/domain/UBW3CWidget.cpp

@@ -247,6 +247,7 @@ QString UBW3CWidget::createNPAPIWrapperInDir(const QString& pUrl, const QDir& pD
 {
     QString url = pUrl;
     // if the file name start with file:// it has be removed because QFileInfo doesn't support this form
+    url = url.replace("file:///","");
     url = url.replace("file://","");
     QString name = pName;
 
@@ -304,7 +305,8 @@ QString UBW3CWidget::createNPAPIWrapperInDir(const QString& pUrl, const QDir& pD
         if (fi.exists()){
             QString target = widgetLibraryPath + "/" + fi.fileName();
             QString source = pUrl;
-            source.replace("file://","");
+            source = source.replace("file:///","");
+            source = source.replace("file://","");
             QFile::copy(source, target);
         }