Thank you for reaching out to us. May we know what is the version of your Proteus? Is it exactly Proteus version 8? Or is it Proteus 8.6, 8.8, 8.9 or the likes? Please let us know the exact version so we can help you better with this.
About the R5F10268ASP#X0 part that you needed. We currently don't have that in our library. You can forward a request to our engineers by clicking the "Request Now" button on the part page.
Kindly let us know if you have any questions about this.
Thanks for your response. Unfortunately, we don't support Proteus version 8.0. Would you be able to update your software to Proteus version 8.9? So we can be able to help you with this.
Hoping for your response.