I'm not too sure which mod you are using. It looks like chancer's mod which does include the seduction mod. But there are certain differences... Some of the scenes in this mod do not play out for me in chancer's mod. For instance taking the camera to anne's room for the sex scene opened up a small photoshoot scene instead of the doggy scene afterwards. I also had difficulty with another scene here on chancer's mod.
My suggestion would be try loading up the seduction mod individually with ikaruga (if you feel that's necessary) and try again.
edit:
In my opinion. It may also be better to play the seduction mod individually. Chancer mod is great. You get so many options to select so many scenes. I definitely recommend trying Chancer's mod. However, I would not recommend it with the seduction mod at the very least, for the first play through. Besides the glitches, the problem lies with storytelling.
Seduction mod is trying to tell a story. You see that by the way they have 40 markers to complete it. The people who wrote the other mods may not have had seduction mod in mind and are also trying to show their scenes. I don't know if it's just me but conflicting stories just ruins the experience for me. It was very enjoyable finishing the seduction mod from start to end. I would recommend at least one play through with just the seduction mod.
