We have a complex Umbraco setup and we deploy new changes on a regular basis. Recently we noticed that Umbraco Contour menu at the backend is broken and it will not load the list of forms created previously. When we removed and re-installed Contour in our development environment it resolved the issue, but we lost all previously created forms, pre value sources and entries.

What is the best way to resolve the Contour issue so that I do not loose any previously created data.

Umbraco Version: v7.2.6

Contour Version: 3.0.21

The error is:

Server Error in '/' Application.
No provider with id '8786bdad-fe7e-4868-8d65-599f1ac3e24c' found
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: Umbraco.Forms.Core.Common.ProviderException: No provider with id '8786bdad-fe7e-4868-8d65-599f1ac3e24c' found

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:


[ProviderException: No provider with id '8786bdad-fe7e-4868-8d65-599f1ac3e24c' found]
   Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func`1 getCacheItem, Nullable`1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, CacheDependency dependency) +1056
   Umbraco.Core.CacheHelper.GetCacheItem(String cacheKey, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, CacheDependency cacheDependency, TimeSpan timeout, Func`1 getCacheItem) +491
   umbraco.cms.businesslogic.cache.Cache.GetCacheItem(String cacheKey, Object syncLock, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, CacheDependency cacheDependency, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) +275
   Umbraco.Forms.Data.Storage.FormStorage.GetAllForms(Boolean archived) +463
   Umbraco.Forms.UI.Dashboard.FormsDashboard.Page_Load(Object sender, EventArgs e) +1295
   System.Web.UI.Control.OnLoad(EventArgs e) +109
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Control.LoadRecursive() +165
   System.Web.UI.Control.LoadRecursive() +165
   System.Web.UI.Control.LoadRecursive() +165
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4498


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.118.0