Hello.

Today I made a new accessory. It works great ingame, but for some reason it shows up with what looks like an expansion pack icon instead of the "*" custom icon in CAS. Apart from this, it works fine.
Does anyone know why this happened? Should it be a problem?

It should have both, unless you've installed it into Program Files. In any case, the EP icon is caused by your having cloned an EP item to begin with. There is a flag in the CASP which you can change if you want to get rid of it, once you've made sure that it does actually work with basegame only (I suggest using the AGS3 to check).

I fixed it! That you for your information and quick reply, but I decided to restart again with a different mesh and now it shoes up as custom like all the others. Although, I've noticed that somtimes in CAS when my Sim is wearing the accessory, she will vanish and then randomly pop back again after a few seconds. It keeps happening until I exit CAS, and everything is fine in-game.

Apart from this, everything seems solved.

Edit : It must have been the original mesh - after I cloned a different one it worked perfectly.