Though this is an old thread, I am running into the same exact issue. Can you please elaborate the solution? I have already upgraded EA-IPPE to 406 and generated stack xml, however SAINT still errors out with pre-req not met (PLMWUI701 required which in turn needs EA-APPL 605, EA-IPPE405(. Since I am already on EHP6, I already have EA-APPL 606 & EA-IPPE406 but PLMWUI701 doesn't like this and hence rejects it saying "Non permitted release of add-on EA-APPL/EA-IPPE installed"
Thanks,
Sid