If you are encountering conflicting messages—a "Success" notification immediately followed by an "Error saving" message—when attempting to upload and save a customer logo, it indicates a permissions issue.
The system requires a specific permission to finalize the upload and update customer details: the "Can Edit Account" permission.
To resolve this issue:
You must verify that the "Can Edit Account" permission is explicitly granted to your user role. This essential permission is located in your settings under the Account tab and is required to successfully save the logo to the customer profile.