Hi, I'm using Umbraco V7.5.2 with Vorto V1.5.3. Each time i save an item one of the following error appear:

1. [P6408/D2/T148] ERROR Our.Umbraco.Vorto.Web.PropertyEditors.VortoPropertyEditor+VortoPropertyValueEditor - Error converting DB value to String System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func1 getCacheItem, Nullable1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, CacheDependency dependency) at Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func1 getCacheItem) at Umbraco.Core.Cache.DeepCloneRuntimeCacheProvider.GetCacheItem(String cacheKey, Func1 getCacheItem) at Our.Umbraco.Vorto.Helpers.VortoHelper.GetTargetDataTypeDefinition(Guid myId)

2. [P6408/D2/T148] ERROR Our.Umbraco.Vorto.Web.PropertyEditors.VortoPropertyEditor+VortoPropertyValueEditor - Error converting DB value to Editor System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func1 getCacheItem, Nullable1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, CacheDependency dependency) at Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func1 getCacheItem) at Umbraco.Core.Cache.DeepCloneRuntimeCacheProvider.GetCacheItem(String cacheKey, Func1 getCacheItem) at Our.Umbraco.Vorto.Helpers.VortoHelper.GetTargetDataTypeDefinition(Guid myId)

Any suggestions ???