Hmm...yeah, I think I understand why people might get worked up, though in the future please don't shout with extra large text--just PM me or another mod if an issue like this comes up and we'll try to deal with it quickly.
However, yes, Plottwist has my backing here, and I'm sure the rest of the mod team is on his side too. Ericard, even if you give credit where it's due (which is good), you still shouldn't use a sprite or any other resource without the creator's permission (which is bad). If plottwist doesn't want his sprites used, then don't use them--I don't think it should be hard for you to change. I'm not going to lock this thread *yet,* but I *will* talk to Jorge and my fellow mods about this, and I *will* ask you to remove the sprites Plottwist wants you to remove and make sure you have permission to use any other resources that may have come from other people in your work.
Now, I'm trying to be cool about this, so I very much hope you'll comply with these reasonable requests, Ericard. However, the administration feels very strongly about respecting other people's work and not being a jerk about using other people's stuff without their approval. My mod colleagues and I feel the same way. Let's try to resolve this situation peacefully and amicably, but we're willing to put our collective feet down if we have to.