Problem with shake effect

Hi, I’ve just upgraded to the latest version of Corona SDK. I will now build an iPhone application with a shaking effect, but then upgrade the software, it seems my old code stopped working. I encounter the following error message:

New Shake Runtime error ?:0: attempt to perform arithmetic on field '\_time' (a nil value) stack traceback: [C]: ? ?: in function 'cancel' .../scene-shake.lua:507: in function 'accelerateObjects' .../scene-shake.lua:438: in function <...><br> ?: in function <?:226><br>

Any idea? Please, help me! [import]uid: 170055 topic_id: 29692 reply_id: 329692[/import] </…>

Is it outdated code, or the feature is not there? [import]uid: 170055 topic_id: 29692 reply_id: 119182[/import]