Rytech

Then something funky is going on. The normalize skill tree function code might have a bug in it or their's a miscalculation in the way the system handles skill trees and skill point checks. Thats the only thing I can think of since im not entire familiar with rAthena's code. Last option I can suggest is testing on a separate test server with no changes made to see if the issue happens there.

Think he's asking how to make a Soul Linker beable to not only soul link other soul linkers, but also use the skill on himself. Look for this line in the skill_db....
 
461,9,6,16,0,0x1,0,5,1,yes,0,0x200,0,magic,0,    SL_SOULLINKER,Spirit of the Soul Linker
 
And then change the 0x200 part to 0 like this....
 
461,9,6,16,0,0x1,0,5,1,yes,0,0,0,magic,0,    SL_SOULLINKER,Spirit of the Soul Linker
 
That will make it castable on yourself.

Ignore that 256 MB and 512 MB stuff because that amount of ram wont get you anywhere since you need enough ram to run more then just the server program itself. At least 1 GB of ram minimal because you have to keep in mind that a OS needs ram to run itself in. For Windows XP you dont need much, but still need a good bit since installed service packs like SP2 and 3 with all of the latest updates do require a good bit of ram, but its less then what Windows 7 would require to run itself. My computer uses a little over 512 MB to run itself due to windows XP SP3 with updates, security program, UPS system monitor program, and a few other small things that use very little ram. Thats just a little over 512 and I have a dedicated GeForce video card and sound blaster sound card. So none of my CPU or RAM resources are being used for video or sound at all.
 
So how much does running the server itself use? The answer may vary depending on how its compiled, what OS your running it on, and how much content data is being loaded. From my test, im using Windows XP SP3 and running 3CeAM compiled in Visual Studio C++ 2008 with Net. 3.5 SP1 In 32-Bit Release TXT mode. The login-server uses 3,400 KB of RAM, char-server uses 3,852 KB of RAM, and the map-server uses 290,648 KB of RAM. The map server itself alone requires more then 256 MB of RAM just to run it. So a little over 512 MB for the computer to run, a good bit over 256 MB for the entire server setup to run. We didn't even cover the part on how much installing and running a SQL database will require if wanted. Note some game features only work in SQL mode.
 
With all of that calculated, 1 GB is around the minimal to run it. But then you gotta think about head space. Surely the OS, server, and SQL database programs will need extra head space (RAM) to flex around in when needed. Now what if you run on windows 7 64-bit and/or run the server in 64-bit? That further increase the amount of needed ram. Its a lot to think about, but the once thought of minimal spec's arnt as low as they used to be. Times changed, OS and system process changed, and the amount of content the server provides has increased constantly.
 
The minimal RAM I can suggest for XP users would a no lower then 1 GB. I dont know how much memory SQL uses, but I hear it uses a good bit. Its a minimal to run a server, but not both a server and client at the same time. The recommended I can suggest for a smooth running server without worry of crashing from lack of memory and allow you to run a server and game client while other few small processes are running is 2 GB.
 
I have to wonder where other's are getting this 256MB / 512MB stuff from. As for CPU im not too sure. Minimal I would suggest is....guess a pentium 4 or celeron??? For a recommended processor I would suggest something like a Intel Core 2 Duo. Sure the server isnt capable of using more then 1 core, but if the server is busy with 1 core, other processes the computer is running can use the other core so they don't hog up the 1st one with the server.
 
I don't know how much RAM rAthena needs to run itself but its likely around the same as 3CeAM or higher since it rAthena has more NPC scripts and bigger item/monster databases.