Clean install 1.7.6 wont work

Hi!

I want to upgrade my Xibo server from 1.7.5 to 1.7.6.
But when i download and install the files i have a white screen.

To be shure i made a new subfolder and uploaded all files like a clean install
But a white screen again.

It seems there is a problem with the download of 1.7.6.
Can anyone confirm this to me?

On the same server 1.7.5 runs perfectly

It should work just fine, please follow the instructions from here: http://xibo.org.uk/manual/en/release_notes_1.7.6.html

I tried again, but again a white screen.
Where can i download 1.7.5?
Then i can check if that version is working on the install

https://github.com/xibosignage/xibo-cms/archive/1.7.5.tar.gz

both should work just fine.

mmm but both wont show up the install pages

any other advice to solve this problem?