Yes, this one has come up in this forum multiple times recently.
Unfortunately, the 8.6(2) locales on CCO will not work on CUC 8.6(2). They will only work on the ES19 release which is not available on CCO at the present time. If you want CUC ES19, you will need to contact TAC for it. Once ES19 is installed, it has been confirmed that the 8.6(2) locales will then work. I have heard however that the 8.6(2) locale must be uninstalled before you can install CUC ES19.
I've got no idea why this is the case and it has caused a lot of big problems. Unfortunately, only Cisco can tell us why.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...