Do you know if those users are running a version of I2 Localization previous than 2.8.0.
If I remember correctly, in 2.8.0 or 2.8.1 there was a fix for a similar crash.
Thanks Frank, that probably is it. I can't confirm which version they are running, but I would guess it's probably 2.8.0 f3. I searched for an Android specific fix in the Release Notes, but couldn't find anything, so good to know it's probably fixed.