Erratum: Interactions and Stress Relaxation in Monolayers of Soft Nanoparticles at Fluid-Fluid Interfaces [Phys. Rev. Lett. 114, 108301 (2015)] Valeria Garbin, Ian Jenkins, Talid Sinno, John C. Crocker, and Kathleen J. Stebe The exponential interaction potential used in the Brownian dynamics simulations has the form F(r)=F0exp[−r/λ]. It is erroneously referred to as a force in the Letter. The potential energy prefactor is F0=(6±3)×10−16 J. The label on the horizontal axis of Fig. 3(b) should read F0(10−16 J). The caption of Fig. 3(b) should refer to an exponential interaction potential rather than force. The results and conclusions of the paper are unchanged.