DNG Converter 6.6 vs 6.7RC

[Kit-V]

I used DNG Converter v.6.6 for the first time to convert CR2 images to DNG from a Canon 60D. However, regardless of the number of images I attempted to convert, the converter would freeze midway through the process. I'm using a MacBook Pro (OS X10.7). Seemed very odd.

As an alternative, I downloaded DNG Converter v.6.7RC which (so far) seems to work fine.

Does this issue sound familiar to anyone? I ask this since I would like to identify a solution if I have a similar problem with v.6.7RC.

Thank you kindly.