You must have done some kind of mistake, like *manually* renaming or copying over the Couatl_updater2.exe to Couatl_updater.exe, maybe because you assumed the Couatl_updater2 was possibly wrong or not required.
I'm quite sure of this because:
- Your log shows you started Couatl_updater.exe, but the log is a report of what Couatl_updater2.exe is supposed to do. A log from the true Couatl_updater.exe should be *much* shorter and, basically, tell it has successfully downloaded Couatl_updater2.exe and started it. Your log, instead, shows what Couatl_updater2.exe usually does: updating all files. But it comes from Couatl_updater.exe!
- You say you don't have Couatl_updater2.exe, which is consistent to the fact you might have renamed Couatl_updater2.exe to Couatl_updater.exe
This, of course, is messing up with the whole system entirely, because:
- the real Couatl_updater.exe is supposed to DOWNLOAD the *current* Couatl_updater2.exe and start it.
- since the Couatl_updater is in fact a renamed Couatl_updater2.exe, it cannot self-update itself anymore (cannot overwrite itself), so you are stuck with an old version.
The easiest fix should be downloading and installing the Stand-Alone Addon Manager, which should restore all the files as they are supposed to be.