I have updated a site from 4.5.2 to 4.9.0. Everything seemed to have gone smoothly, but now ALL xslt macro's stop working. The < and >'s are all rendered as the entitity (&amp;&lt; and &amp;&gt; respectively). And I can no longer use the xslt visualize option.

Using the debug mode, I found the following error:

Unable to load one or more of the types in 
assembly 'App_global.asax, Version=0.0.0.0, Culture=neutral, 
PublicKeyToken=null'. Exceptions were thrown:
System.TypeLoadException:
 Could not load type 'umbraco.Global' from assembly 'umbraco, 
Version=1.0.4633.18696, Culture=neutral, PublicKeyToken=null'.
Unable
 to load one or more of the types in assembly 'App_global.asax, 
Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'. Exceptions were 
thrown:
System.TypeLoadException: Could not load type 
'umbraco.Global' from assembly 'umbraco, Version=1.0.4633.18696, 
Culture=neutral, PublicKeyToken=null'.
   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.<GetXsltExtensions>b__0()

   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.macro.loadMacroXSLT(macro macro, MacroModel model, Hashtable pageElements)

I have already tried to remove a few DLL's based on replies in other topics, but so far, nothing is working.

-Ferdy