How to determine what plugin or process is causing a failure

We have an issue with the name field on the account.  When modified "something" is failing and we receive a popup with the message Invalid Argument.

What I know

• Failure only on updates
• Failure only if updating the Name field - all other fields when updated process as expected
• Failure if updating from a form or from an interface (which means to me that form javascript is not the culpret).

My assumption is that the failure is coming from a plugin or a workflow.  Any others?  WOuldn't it be nice if the failure actual said where it was generated

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Expected non-empty Guid.Detail:<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts"><ErrorCode>-2147220989</ErrorCode><ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" /><Message>Expected non-empty Guid.</Message><Timestamp>2017-10-16T13:38:46.9734166Z</Timestamp><InnerFault i:nil="true" /><TraceText i:nil="true" /></OrganizationServiceFault>

To find the culprit I plan on disabling all plugin's and workflows on the Account entity. Any guidance on how to quickly find what is throwing the error?

Diane