I want to show you how to start the DN launcher without getting this screen, since some of us can't start it normally anymore (since ruina patch or so).
Before, I have a good and a bad news for you... The good is, your client data isn't corrupted or so, so rest assured. ^^ It's only that message it pops up before you want to play/patch it. The bad news... to get through it you must install SoftEther VPN Client Manager and run it everytime before you start the launcher. You can get this from here:
Be sure to download the SoftEther VPN client + VPN Gate Client Plugin, unzip it with 7zip or Winrar and run the installer. Follow the instructions until you can choose either SoftEther VPN Client and the Client Manager (Admin tools only). You need only the first one so click it and continue until you finished to install. This is how it should looks like:
Now comes the irritating part. Doubleclick VPN Gate Public VPN Relay Servers and a window pops up. Click in the Region Tab and scroll down until you find japanese servers. Find now the japanese server with the highest uptime (others can work too), doubleclick it and then on OK.
Wait a few seconds and you should be connected, if not, try out the next japanese server. I'm not sure, if the other regions (for example korean) can work too.
Now it's time to start the DN launcher. The "data is error" message shouldn't pop up now and you can finally click on play or it should start automatically patch normal. Be assure if it works, you disconnect the chosen server through rightclick -> disconnect to improve your internet speed! (yes, when connected through vpn your internet speed will be very slow...)
So everytime you want to play DN you must connect it with SoftEther before you start the launcher and then you can disconnect it and click on the play button.
I hope this guide will help you guys to play DN finally again and for the newcomers too. Have fun.
Edited by AlexPalex, 24 November 2017 - 04:04 PM.