Just did in install of 4.7. I upgraded a 4.6.1 site.

I get the following error when I try to run any XSLT.  I dont have anything special going on so I'm not sure what the problem is.  I know the release notes say "The definition of iMacroEngines has changed" but I dont know what to do to fix it.

-Nate

Error parsing the XSLT:

System.Exception: Unable to load one or more of the types in assembly 'umbraco.MacroEngines.Legacy, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Exceptions were thrown: System.TypeLoadException: Method 'get_SupportedExtensions' in type 'umbraco.MacroEngines.Legacy.DLRScriptingEngine' from assembly 'umbraco.MacroEngines.Legacy, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation. at umbraco.BusinessLogic.Utils.TypeFinder.FindClassesMarkedWithAttribute(Assembly assembly, Type attribute) at umbraco.BusinessLogic.Utils.TypeFinder.FindClassesMarkedWithAttribute(Type attribute) at umbraco.macro.GetXsltExtensionsImpl() at umbraco.macro.b__4() at umbraco.cms.businesslogic.cache.Cache.GetCacheItem[TT](String cacheKey, Object syncLock, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, CacheDependency cacheDependency, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) at umbraco.macro.GetXsltExtensions() at umbraco.macro.AddMacroXsltExtensions() at umbraco.macro.GetXsltTransformResult(XmlDocument macroXML, XslCompiledTransform xslt, Dictionary`2 parameters) at umbraco.presentation.umbraco.developer.Xslt.xsltVisualize.visualizeDo_Click(Object sender, EventArgs e)