As a newbie to Umbraco, I am still learning the ropes, but have encountered problems with creating an XSLT file.

I have previously created Macros using XSLT files to create a site navigation. However, after installing the Cultiv Razor Contact Form package, I started experiencing issues with the macros, and decided to uninstall the package. Uninstalling the package has no effect, so I made a rash decision to remove the Macros and XSTL files that I had previously created. I also removed all references to the macros in the master template.

Now whenever I attempt to create a new XSTL file with or without a template, I am given the following error message:

Server Error in '/' Application.

Unable to load one or more of the types in assembly 'Umbraco.Forms.Core, Version=1.1.0.19647, Culture=neutral, PublicKeyToken=null'. Exceptions were thrown:

System.IO.FileNotFoundException: Could not load file or assembly 'Umbraco.Forms.References, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

System.IO.FileNotFoundException: Could not load file or assembly 'Umbraco.Forms.References, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Exception: Unable to load one or more of the types in assembly 'Umbraco.Forms.Core, Version=1.1.0.19647, Culture=neutral, PublicKeyToken=null'. Exceptions were thrown:

System.IO.FileNotFoundException: Could not load file or assembly 'Umbraco.Forms.References, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

System.IO.FileNotFoundException: Could not load file or assembly 'Umbraco.Forms.References, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 

[Exception: Unable to load one or more of the types in assembly 'Umbraco.Forms.Core, Version=1.1.0.19647, Culture=neutral, PublicKeyToken=null'. Exceptions were thrown:

System.IO.FileNotFoundException: Could not load file or assembly 'Umbraco.Forms.References, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

System.IO.FileNotFoundException: Could not load file or assembly 'Umbraco.Forms.References, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.]

   umbraco.BusinessLogic.Utils.TypeFinder.FindClassesMarkedWithAttribute(Assembly assembly, Type attribute) +390

   umbraco.BusinessLogic.Utils.TypeFinder.FindClassesMarkedWithAttribute(Type attribute) +124

   umbraco.macro.GetXsltExtensionsImpl() +884

   umbraco.macro.<GetXsltExtensions>b__0() +5

   umbraco.cms.businesslogic.cache.Cache.GetCacheItem(String cacheKey, Object syncLock, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, CacheDependency cacheDependency, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) +132

   umbraco.macro.GetXsltExtensions() +204

   umbraco.macro.AddXsltExtensionsToHeader(String xslt) +130

   umbraco.XsltTasks.Save() +410

   umbraco.presentation.create.dialogHandler_temp.Create(String NodeType, Int32 TypeId, Int32 NodeId, String Text) +383

   umbraco.presentation.create.xslt.sbmt_Click(Object sender, EventArgs e) +173

   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118

   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112

   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10

   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13

   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36

   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

I was hoping if anyone has experienced the same issue before. I have looked inside the bin and config folders to see if files were missing or needed to be removed, but I don't want to start deleting anything I shouldn't.

Many thanks