If you press start on your client and nothing happens or you get stuck logging in, there is not a million options of what could have went wrong.
First option is you are playing with in-game sound, please don't use the in-game sounds.
Second option is something modified or deleted our f8lib.dll
Third option is you are trying to login 2 chars in Job mode, HWID for Job is 1.
If you get any of these error, please follow these steps.
1- Download Client Fix here :
[Only registered and activated users can see links. Click Here To Register...]
2- Delete F8lib.dll from your Emerald Folder
3- Add Emerald folder as exception in your antivirus / firewall / windows defender (I recommend using only Windows Defender, no antivirius is needed nowadays if you ask me WD does it all waaay better than any antivirus.
4- Once you deleted the f8lib.dll from your folder, extract it from client fix into your Emerald Folder again.
5 - Don't use in-game sounds again