Arduino Library downloader

The newer versions of the IDE look for downloaded libraries in two places. One is the libraries folder under the arduino-xxxx folder. The other is the libraries folder of the sketch folder.

Upgrading from arduino-0021 to arduino-0022 means that any libraries installed in arduino-0021\libraries are no longer available for use.

This suggests that downloading new stuff to arduino-xxxx\libraries ought to be discouraged.

It appears that this is where your application is downloading libraries to. I'd suggest changing the (default) destination, at least for newer versions of the IDE.