New version extension problem

Hi,

I find a problem on install a new version of an extension I have.
resume:
1°) I have an extension installed
2°) A new version of the extension is released.
3°) I unistall the old version
4°) I install the new version
5°) Dw open the extension with the old Js files!!!! WHY??? Maybe Dw create a cache copy of the Js files??


Thanks
Gianluigi