@Thrippa With your experience, that's even more likely that the following happened:
"Lexers615;15348713" wrote:
Doesn't have to. If it alters other game items (namely, the "Messages in a Bottle"), the game might be waiting for you to collect something that no longer exists and has been replaced by a similar item having the same graphic and function. I'm not sure how the achievements triggers and tokens work, but if it's too picky, and that the "Messages in a Bottle" have since been significantly modified, they may no longer be recognized as such by whatever is keeping track of your achievement...
