Question juridique clé
How the settlement clause 'in default with one installment' must be interpreted
Solution extraite
The clause covers incomplete timely payment of an installment; even partial late payment triggers default.
Motifs extraits
The court applied contractual interpretation by true intent if ascertainable, otherwise reliance on the trust principle. In ordinary language, one is in default with an installment if it is not paid in full on time. The settlement scheme showed an incentive-based conditional waiver tied to strict compliance, so a symbolic partial payment could not prevent acceleration.