Q: I heard that you are never supposed to put a compressor after an EQ. Is that true?
A: Not necessarily. It depends on what you want; either order can work fine, depending on the results you are after. There is one caveat: if the EQ is in front of the compressor and you adjust the EQ, the compressor will become more sensitive to any frequencies that are boosted — that's how a de-esser works, for example.
Our advice is to experiment and see which you like best and which performs best to give you the results you want. You may find you put the EQ first in the chain some times and the compressor first other times.