I recently had a client that was experiencing errors trying to navigate to Account records in the SalesLogix web client. The errors that were displaying were similar to: "Component Parameter name: The argument component cannot be null."
A search of the event logs on the web server reveled errors like so: Component Parameter name: The argument component cannot be null. at Sage.Platform.Exceptions.Guard.ArgumentNotNull(Object argumentValue, String argumentName) at Sage.Platform.ComponentModel.ComponentView..ctor(Object component, ComponentViewPropertyDescriptor[] extendedProperties) at Sage.Platform.ComponentModel.ComponentView..ctor(Object component) at Sage.Platform.WebPortal.Binding.WebEntityListBindingSource.convertTypedCollectionToComponentView(Int32 maximumRows, Int32 startRowIndex, String sortProperty, SortDirection sortDirection) at Sage.Platform.WebPortal.Binding.WebEntityListBindingSource.getFullCollectionList(Int32 maximumRows, Int32 startRowIndex, String sortProperty, SortDirection sortDirection, Boolean asComponentView) at Sage.Platform.WebPortal.Binding.WebEntityListBindingSource.GetData(Int32 maximumRows, Int32 startRowIndex, String sortProperty, SortDirection sortDirection, Boolean asComponentView) at Sage.Platform.WebPortal.Binding.WebEntityListBindingSource.GetData(Int32 maximumRows, Int32 startRowIndex, String sortExpression)
After digging what I discovered was the error was coming from the Account Opportunities tab. The user that was experiencing the errors had restricted field level security to the Opportunity table. One of the restrictions was the Status field was set to no access. The Web client has several computed entity fields showing $ per status that is then displayed on the Opportunity tab at the Account. Because of the field level security on the Status field, the entity level formulas were what was causing the errors. Adding Status back as a read-only field in their field level security fixed the issue.
On a related not I also noticed that the Opportunity groups would not work until I added back in field level access to the following Opportunity fields: OpportunityID, AccountID, SeccodeID.