Originally Posted by Subion
I beat the first level with Silent Assassin rank and got a message saying I unlocked the Silverballers SD. I started the second level and had them in my inventory and quit the level mid play. I started back up and now my Silverballers are gone from the game and my weapon selection.
If you go back to dashboard and start agin it seems to fix the bug.
Yeah I had same problem on my GameCube version in past. It got same bug still there. Oh well.