.MXF works but not .APP: error locating jitter-passes folder

Hello
I recently upgraded from Max7 to Max8. Trying to also upgrade my app that works well with Max 7 since several years, I built it again from sources to an application with the new Max 8 in the same environment.
It launches and run correctly, I appreciate the reduced size. But Max console alerts on "error locating jitter-passes folder". An important function related to audio outputs is also missing. I cannot debug because all works fine with the source files in the Max environnment

Then I have built the collective .MXF in the same environment; this one reports no problem and works well.
An idea?