The problem is because of the letters P3 in TP3_Pips. If you look on the left side, P1, P2, P3 and other Px can be used in the same way as V1, V2 and so on. So basically the P3 letters in TP3_Pips are replaced with something that doesn't need to be there.
Anyway, I added some code in few regular expressions and I think I fixed this problem. But if you will need to save the block again.