I have this message : "Cannot open or remove a file containing a running program"

Hi everybody,

(sorry my english is not that good …)

when I try to deploy somes portlets, I get this message : “Cannot open or remove a file containing a running program”, then the deployement failed.

the amazing is that I have this problem only with just 3 portlets, the others are deploying normaly.

the common point between them is that they include a Jar file in theire “Java build path” (wich I use in my code) but this Jar do exist in the Lib/ folder…

any ideas ?
thanks a lot…