Current problems with Pakistan - KSA relations are as follows(of course its my own view):
1) Some Asian(Indian) and Western(America) countries are simply cant bear and tolerate Pak Saudia understanding over some issues, as this gives strength to both the countries.
2) Pakistan and Saudia handle things in different ways. Specially the young crown prince of KSA is taking things in a too childish manner.
3) Some countries in this world want Saudia to become an utter slave state, which Saudis are currently resisting. Wars, if you dont have technology bases in your own country, if you dont have global money flow in your own control, makes you weak. Involving KSA in wars, which made many powers poor, will surely make them weak as well.
4) Weakening Qatar is not good for Saudis as well. We Pakistanis always tried to have good relations with our neighbors, why? and KSA is continuously on the way to screw her neighbors. I think some Indian is making policies of KSA these days.
5) Pakistans stance on this middle east situation is clear; we are against all the wars who will eventually harm Saudia. We know Iran, and we know how to maintain our relations with them. Saudia is our brother, and we will fulfill are requirements of brotherhood.
6) We are here for the unity of ummah not to destroy one for other, and eventually get destroyed.
We love you KSA, but the way you think is not our way of thinking.