When I click on new calendar button in calendar overlay page, I always get this error:
Error
An unexpected error has occurred.
Troubleshoot issues with Microsoft SharePoint Foundation.
Correlation ID: 3c0a60f1-6ceb-425c-81c1-0556c43b3070
Date and Time: 5/13/2015 10:47:58 AM
I have two different calendar in my site and they both got this same error when I attempted to add new calendar overlay, can someone tell me what is causing this error?
UPDATE: LOG files message filtered by this correlation ID:
- System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances. (Exception from HRESULT: 0x80131401)
at Microsoft.SharePoint.Utilities.ThmxTheme.Open(Stream stream, FileMode mode, FileAccess access)
at Microsoft.SharePoint.Utilities.ThmxTheme.Open(SPFile themeFile, Boolean readPublishedVersion, FileMode mode, FileAccess access)
at Microsoft.SharePoint.Utilities.ThmxTheme.Open(SPSite site, String url)
at Microsoft.SharePoint.ApplicationPages.AggregationCustomizePage.InitializeDropDownListItems()
at Microsoft.SharePoint.ApplicationPages.AggregationCustomizePage.CreateChildControls()
at System.Web.UI.Control.EnsureChildControls()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
I'm still unsure about what is causing the error after reading the message.