If you are having issues with interlude skills, mobs missing from your IG client follow this simple procedure to correct the issues.

1. Visit http://www.towalker.com/english/down.asp
2. Make sure you have the newest ENGLISH IG client 1.78
3. Download ENGLISH OOG Client 10.8.3
4. Copy the OOG 10.8.3 L2InfoA.dat file into your IG 1.78

Close all of your walker clients and reopen, IG 1.78 should properly display all interlude information.