arisgamers

I used MySQL 5.6 + workbench 6.1 prior changed it to MariaDB.
The graphical interface is different but that shouldn't be a problem.
After you installed Workbench you should have a connection named "root", it can be seen in first interface.
You can open it by double clicking it, then you can make "hercules" & "log" schema, and follow the rest of the guide.

For full client download, try this :
http://herc.ws/board/topic/38-latest-kro-installation-small-client-package/
 
the one from nickyzai is 2014-09-01.
 
for ragexe.exe :
http://k3dt.eu/Ragexe/unpacked/

The last stable client for now is 2014-02-05 client.
 
I see in your other post you already download ossi's client 2013-12-23.
That is a good start to get any 2014 client (i use that too, and update it to 2014-02-05).
 
This is the way how to get it :
1. you have to update your client data by running rsu-kro-rag-lite.exe (already included in ossi's client)
  after patch process complete, just close the patcher (do not choose start)
2. download 2014-02-05 ragexe from : http://k3dt.eu/Ragexe/unpacked/
3. patch that 2014-02-05 client with NEMO Patcher : http://herc.ws/board/topic/2905-nemo-client-patcher/
4. put the patched ragexe in your Ragnarok client directory.
5. you got 2014-02-05 client. use the patched ragexe to start your client.

Older client may work with newer data, but can not use new content in it,
you need newer client to use newer content.
 
Example :
if you use old client (client that released before rebellion class), and update the data to the recent date.
your client will still work, but can not have rebellion class.
Rebellion data is at there, but will never used by old client, because old client do not know Rebellion.
In order to have rebellion you need newer client (client that released after rebellion class).

For today kro :
1. Ragexe.exe is renewal
2. RagexeRE.exe is Sakray
 
They remove classic !
so rsu-kro-rag-lite.exe will update renewal and
rsu-kro-renewal-lite.exe will update sakray
 
About YourRO.exe :
1. you can run older YourRO.exe with newer data (up to date) but
2. you can not run newer YourRO.exe with older data.
 
Example :
last ossi's client is 2013-12-23 :
1. you run rsu-kro-rag-lite.exe and got newer data, and you do not change YourRO.exe.
Result : your client will still work.
 
2. you change YourRO.exe with 2014 version, and do not run rsu-kro-rag-lite.exe.
Result : your client may have trouble.
 
You should have a patched client (YourRO.exe) to use hercules.
 
About clientinfo.xml, if not inside palette.grf, it should be in YourRO.grf;
I forgot the exact location

The clientinfo.xml in ossi's client is inside palette.grf, you can extract and merge it back after editing it with grfbuilder (this tool already included in ossi full client download, under Tool folder).
 
YourRO.exe in this client is already patched.
You have to check these lines in [hercules directory]srccommonmmo.h
 
 
 
 
make sure the packetver is same with your client date.
And if you make any change, don't forget to recompile it.
 
NB : If you want to patch your own client you can find some unpatched Ragexe.exe in:
http://k3dt.eu/Ragexe/unpacked/
2014-02-05bRagexe.exe is the last stable one.
 
Note : your client data should be updated first before you use newer client,
this can be done by running rsu-kro-rag-lite.exe (this file made by Ai4rei, and already included in ossi's client)