It's OK now.
I think it was a problem with copy/paste from your list to a new versions.txt file on Windows.
I had a 365 ko file and your file is 382 ko.
I directly download from your website and now Available-Updates.txt is OK.
I've got version 1.5.4 and the latest versions.txt.
The offline analysis results is no new updates available, no new DLC binaries available and no available DLC not Installed.
There seems to be some problems :
I don't know why it doesn't...