Getting spammed with "Multiple constructor definitions found"

I get randomly spammed with these messages for all kinds of MovieClips i have:

Multiple constructor definitions found. Constructor may not be defined in <Script/> code.

I dont have and “<Script/> code”, nor can i find any duplicate classes ~^

Sometimes i get like 2500 errors of these, and Flash CS4 becomes sluggish, and I have to keep clear the Comiler Errors window all the time.