Wenutz - Your details is so vague and some of us don't experience this at all. You must have done something that conflicts the build. The log file actually helps even if it so long, the error details inside the log is usually at the bottom and highlighted with a red color or has a text failed right next to it. Intel sometimes don't answer messages with inadequate information and common problems that can be fixed using some tutorials, solving by yourself or third party related problems. If you ask me, the reason might be because of your third party plugins which is out of the hands of Intel.
I tried to found the error message but there was none appart from what I wrote above. I have upgraded from beta 226 to 227. The export folder got corrupted with a huge amount of " folder" inside each others. The folder is even too big for my Bin. This is the reason why the upload Intel Server failed.
Now all is fine. Thank you for your input anyway.