Modal Difficulties with Singular Propositions

Singular propositions are structured entities which sometimes include macroscopic concrete things as their elements. That leads to numerous difficulties, also those concerning modalities, good example of which is the famous argument developed by Plantinga, who concludes that accepting a theory of singular propositions leads to necessary existence of (apparently contingent) objects elements of such propositions. In the paper I present a possible way to avoid such harmful consequences and to undermine Plantinga's reasoning. My approach involves the idea of two modes of evaluating propositions: "in a possible world" and "with regard to a possible world", which I try to defend by introducing some solutions from the Hybrid Theory of proper names. I also argue that disposing of singular propositions and accepting Descriptivism does not allow to deal with the modal difficulties.