Record with Chrome using Packed Extension (pre-release)

This is a companion discussion topic for the original entry at

When executing tests in Chrome in a security restricted environment, I have also the same error : “Loading the unpacked extension is disabled by the administrators.” If I close the error popup, test seems to execute properly. But I have to close the popup every single time I execute test, otherwise the test doesn’t even start.

So is this extension usefull in that case too ?