has a constant ability that, while active, changes the way the game state is recorded whenever a run is declared successful or unsuccessful. Even if the Crisium Grid is trashed during that same run, the result of that run is permanently modified and cannot be seen as successful nor unsuccessful for the purpose of any card ability.
If the Runner chooses a server for that has a Crisium Grid installed rezzed in it, and then s/he runs on that server and trashes the Crisium Grid, the Runner can run on that server a second time and cash out on Security Testing because it will be the first successful run on that server that the Security Testing can see.
I just saw a troubling ruling contradiction that I thought I would bring to your attention.
In response to a question from Anton regarding Crisium Grid and Security Testing, you said that after running and trashing the Crisium Grid, a follow up run on the same server would not pay out for Security Testing. This implies that Crisium Grid is a sort of "lens" through which card abilities see successful runs as not successful, which is in line with my understanding of the rules. Crisium Grid has a constant ability that does not seem to prevent, replace, or otherwise modify any game state; it just has an effect that stops cards from knowing about successful runs as long as it is active.
However, from Eric's question regarding Crisium Grid and , you said that running and trashing Crisium Grid as the only run on a turn would still allow Tennin Institute to place an advancement token on a card. This seems in direct contradiction with the other ruling and how the card is worded, implying that Crisium Grid's effect somehow alters the outcome of the run to "successful, but not for card abilities" for the remainder of the game.
So, long story short: how is Crisium Grid supposed to work? Does it:
1. affect run outcomes, modifying their state permanently; and if so, what part of the wording makes it this way considering it neither has a trigger nor has replacement text? Is the key word "considered" (this is the first card to ever use this word, so my understanding could be warped by not recognizing this as a game term)?
2. affect the capability of cards to see successful runs, as implied by its wording and the fact that it is a constant ability?
This ruling is a partial reversal of the Crisium Grid Interactions Ruling. In that ruling, Lukas said that the second run on the Security Testing server would not pay out; here he is officially reversing that statement.