I am currently assigned the security role which is almost an exact copy of system administrator. The only difference is , the new role does not have bulk delete priveleges. I am trying to change my role from the role without bulk delete permissions to System admin and am thrown this error.
Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: System.Web.HttpUnhandledException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #DA19CFC5Detail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>System.Web.HttpUnhandledException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #DA19CFC5</Message>
<Timestamp>2017-07-13T18:55:20.338667Z</Timestamp>
<InnerFault>
<ErrorCode>-2147220960</ErrorCode>
<ErrorDetails xmlns:d3p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>RoleService::VerifyCallerPrivileges failed. User: 29871e87-fa3e-e711-80c6-005056bd11fd, PrivilegeName: prvAppendExternalParty, PrivilegeId: 79aa14c3-e423-4cae-b6ba-ab8975a52434, Depth: Global, BusinessUnitId: a181f203-4ff4-e511-80c1-005056aa8521</Message>
<Timestamp>2017-07-13T18:55:20.338667Z</Timestamp>
<InnerFault i:nil="true" />
<TraceText i:nil="true" />
</InnerFault>
<TraceText i:nil="true" />
</OrganizationServiceFault>
On what I think is a related note, if am currently assigned the role without bulk delete, I am able to view my personal settings. However, if am assigned just the System admin role, 
I am unable to view my user settings. Please see screenshot.
