CRM 2015 On Prem error in Account entity when working offline after installing update 1.1

Hello,

After installing the CRM 2015 client 1.1 update we keep getting this error when trying to open an account record (and some custom entity records have the same error as well) in offline mode:

The error only occurs on forms where we use rollup fields.

Any thoughts on this error are very welcome as we can't roll out the update until we have fixed this issue!

In the event viewer on the user's laptop we noticed this error info:

Log Name: Application

Source: ASP.NET 4.0.30319.0

Date: 15-11-2015 0:02:17

Event ID: 1309

Task Category: Web Event

Level: Warning

Keywords: Classic

User: N/A

Computer:

Description:

Event code: 3005

Event message: An unhandled exception has occurred.

Event time: 15-11-2015 0:02:17

Event time (UTC): 14-11-2015 23:02:17

Event ID: 33998f221ec342f59f56773b7bb894a1

Event sequence: 286

Event occurrence: 5

Event detail code: 0

Application information:

Application domain: 58ffc4dc-2-130920127559232436

Trust level: Full

Application Virtual Path: /

Application Path: C:\Program Files (x86)\Microsoft Dynamics CRM\Client\res\web\

Machine name: AM00945634

Process information:

Process ID: 6404

Process name: Microsoft.Crm.Application.Hoster.exe

Account name:

Exception information:

Exception type: AttributeMetadataNotFoundException

Exception message: 'RollupProperties' entity doesn't contain attribute with Name = 'isactivitypartyincluded'.

at Microsoft.Crm.Metadata.EntityMetadata.GetAttribute(String attributeName, NameMappingType mapping)

at Microsoft.Crm.Query.ColumnSetExpression.AddColumn(String attributePlatformName)

at Microsoft.Crm.Query.ColumnSetExpression.AddColumns(String[] attributePlatformNames)

at Microsoft.Crm.Caching.RollupPropertiesCacheLoader.LoadCacheData(Guid key, ExecutionContext context)

at Microsoft.Crm.Caching.ObjectModelCacheLoader`2.LoadCacheData(TKey key, IOrganizationContext context)

at Microsoft.Crm.Caching.CrmMultiOrgCacheBase`2.CreateEntry(TKey key, IOrganizationContext context)

at Microsoft.Crm.Caching.CrmMultiOrgCacheBase`2.LookupEntry(TKey key, IOrganizationContext context)

at Microsoft.Crm.Caching.RollupPropertiesCache.LookupEntry(Guid key, IOrganizationContext context)

at Microsoft.Crm.Caching.RollupPropertiesCache.TryLookupEntry(Guid key, IOrganizationContext context)

at Microsoft.Crm.Application.InlineEdit.JsonWrapperFactory.AppendPropertiesForRollup(AttributeMetadataJsonWrapper jsonWrapper, AttributeMetadata attributeMetadata)

at Microsoft.Crm.Application.InlineEdit.JsonWrapperFactory.Create(AttributeMetadata attributeMetadata, String entityLogicalName)

at Microsoft.Crm.Application.InlineEdit.JsonWrapperFactory.CreateEntityWrapper(Int32 entityTypeCode, String formId, ICollection`1 attributesOnForm, ICollection`1 unboundControlsOnForm)

at Microsoft.Crm.Application.InlineEdit.ReadFormDataBuilder.RetrieveFormattedEntityMetadata()

at Microsoft.Crm.Application.Pages.Common.ReadLayoutPage.WriteEntityMetadata(TextWriter writer)

at Microsoft.Crm.Application.Pages.Common.ReadLayoutPage.Render(HtmlTextWriter writer)

at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)

at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)

at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)

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

Request information:

Request URL: http://localhost:2525/_forms/read/layout.aspx?etc=1&formid=b053a39a-041a-4356-acef-ddf00182762b&formts=356028&hash=B6E3CC5B98DA80A6DA26063B568D792F8C77E0C7002C27F3EB9C9AA434434BE4&isPreview=False&isTurboForm=False&outlook=True

Request path: /_forms/read/layout.aspx

User host address: 127.0.0.1

User:

Is authenticated: False

Authentication Type:

Thread account name:

Thread information:

Thread ID: 36

Thread account name:

Is impersonating: False

Stack trace: at Microsoft.Crm.Metadata.EntityMetadata.GetAttribute(String attributeName, NameMappingType mapping)