The Merciless Dagger

I thought this was illegal, but this skin by Nonhuman proved me wrong. The weapon is from Darkspore. I've been having a lot of problems logging in and uploading (this is my 2nd attempt), and I was rushing and forgot to mention that the model is from Darkspore, as is most of the texture. I am currently unable to comment. I frequently login, am redirected to my profile, then I go back to the TF2 section, and then the site treats me like I'm not logged in...except that when I try to log in, I get an error saying that "You must be a guest". If anyone knows how to fix that, PLEASE tell me how.