Rekordbox freeze

Hello,

Since last week I can't use Rekordbox.

When I launch the program, it just show the window and I can't do anything, my mouse cursor is showing the "loading" logo.

So I uninstalled, reinstalled 32 bits version, 64bits, Beta version, and I have every time this problem.

I tried to move my master database, so Rekordbox works and say he can't find the master database, when I press "create a new master database" he do it, but freeze again ...

Thanks for reading me.