Try the following:
-) Make sure latest patches are installed/latest IRO is being played.
-) Visit the bottom of the North Crater and then return.
After reaching the bottom of North Cave, a phone call should be received from the Highwind. If this doesn't happen, then it means the flevel scripts aren't installed.
I went to the bottom, and finally it worked. Thanks man!
I loved the mod, but it would be great if you could change some things (Played 1.4 and in disc 3, 1.5, i don't know if you changed any of this in 1.5)
1- Try to add more protagonism to Aeris instead of just make her another background character. Let her talk in Highwind discussions, for example.
2- A lot of boss battles lost the "boss feeling" for me when you changed the battle music for another. it's fine if you want more tracks to be used, but personally, and i think a lot of people agree, i like to get pumped up with the boss battle music
Also, is there a place where i can farm AP? i assume the 3 red balls in the northren cave still exist