Open folder 'Data\techtree':

Open 'tech1' and find the following:

fed_warpin_special.odf 0

add beneath it:

fed_warpin_specialY.odf 0
fed_warpin_specialZ.odf 0

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Open 'freetech' and find the following:

fed_warpin_special.odf 0

add beneath it:

fed_warpin_specialY.odf 0
fed_warpin_specialZ.odf 0