Holy ffffffff...
thank gaf for making me nervous about that EU data to redownload.
Because of this, i checked my Battlenet account, even if i am in the US, in case there was a newer version of the data.
I realised what i downloaded was set the EU version !
Apparently, only Starcraft 2 download is set to US, the rest is set to EU by default, and even by using (change) and SAVE i cannot set them up to US permanently.
redownloading...
Happy to learn about it now, or tuesday night would have been a 3 AM Nerdrage meltdown moment.