Forum migration mostly complete. Please see this post for more info and post any issues.
What version of VL you are using?For VL5.9 or VL6, we using either HAL or VL-HOT to mount device like pendrive.
You may be looking for you pendrive to show up on the desktop, but in vl-light it does not. Instead it will show up in you file manager. Plug in your pen drive and watch for it to appear on the left hand side pane of pcmanfm (the file manager).
I have been using vl-6.0 light with Hal, maybe that is the difference. Perhaps if vlesperanza is also using HAL, switching to vl-hot could solve the issue.