For a majority of people similar if not identical issues occur, thus in this thread I will cover the majority of simple issues that happen when running the game.
Game failing to launch: issues causing the game to not launch or improperly launch.
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The most common of all issues which can cause the game to either not function at all or have issues with screenshots is improper resolution settings, if you don't know your resolution then you can use http://whatismyresolution.com/to find it. From there run opensetup(.exe) in your LeikaRO folder and adjust it to what is shown on the website.
Another common issue which results in the game not launching properly is not running it in windows compatibility mode Ragnarok Online is an old game from 2003 to be exact. For optimal performance you may want to right click LeikaRO(.exe) and enter the compatibility tab, check the box and set it to Windows XP Service Pack 2/3 to emulate running LeikaRO in Windows XP.
An uncommon issue is graphics settings not showing generally this can be fixed by setting opensetup(.exe) to run as administrator, if not repeat the above fix for LeikaRO(.exe) on the opensetup(.exe), from there launch as admin and your graphics options should appear.
Another issue that may occur is your firewall or anti-virus software blocking it, you may need to manually add an exception to allow LeikaRO(.exe) through it, this can be done when/if prompted by your AV/Firewall or if you open your AV/Firewall there should be an option to add exceptions.
Additional help: If all is done and nothing above has solved your issues post below the following
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Your graphics setup, you can find out what your graphics are by running "dxdiag" through the "Run" program which you can either search for, or hold your windows key and hit "R".
Your operating system also found with the above method if unknown.
What settings you're using with opensetup(.exe).
What Anti-Virus software/Firewalls you use.
Some symptoms that are occurring (frequent crashing,erroing,failure to patch)
Erroring: It happens, what can I do?
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If you error you have no options, reinstall the client.
If you error frequently after reinstalling but have all up-to-date patches it may be a certain sprite erroring you. If you find this happening check in the Bug Reports and Tech Support sections for your server if there isn't a post about it, make a post about it to see if others have the same issue. Only then will the GM team will look into it.
Erroring also happens albeit infrequently when teleporting quickly there is no known fix for this.
Visual bugs: for small bugs causing things to look a little off.
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Sometimes some small visual bugs happen with some sprites/effects (auras and soul linked players being most notable)
If your screen or parts of it are miscolored(black,flashing etc) then there is a simple fix to this type the command /lightmap, your issue should be resolved.
Newer Graphics cards, notably the Nvidia/GTX 900 series may have some issues with certain sprites not showing properly, this can be fixed by pressing control+alt+delete then escape with an open client. This has nothing to do with the game running, so that's all.
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