Bukkit Server: Bad Login

So I've recently installed my very first Bukkit Server and had to be the latest beta which is the "CraftBukkit Beta Build (1.5.2-R0.1)".
The problem is I can't connect to my own server!

Here are some info that I have and done:
- First of all, I have the Premium Account so that's not the issue. I even have 2 accounts.
- Before installing Bukkit, I had the legit Minecraft Server running, my friend from his home tested it and it worked perfectly fine, so I don't think it's a port forwarding nor router problem. Besides I can't even connect to the localhost (0.0.0.0) which is weird, and weirder cause it gives me a "Bad Login" error.
- Firewall? I'm not sure since I could run the legit MC Server. Correct me if I'm wrong.
- About the "server.properties" I left the "server-ip=" blank

Feel free to ask me any questions and I'd gladly answer since you're helping me
Thanks in advance!

 

i have the same problem. my mc server works correctly but i can't use bukkit server

 

Are you really connecting to 0.0.0.0? You should enter localhost when connecting from the same box.

 

Change the server ip= to your IPv4
Turn off your firewall, sometimes it blocks the connection if you're trying to get other people to join
Use localhost or :25565 or :YourPort to connect if you don't want to do all that

 

No, don't do that. Facepalm is quite the fitting nickname here.

 

Well, works for me
I usually put in my hamachi's Ipv4 :La

 

We'll just assume you are joking and/or trolling.

 

InspectorFacepalm Most people said not to put anything on "server-ip=" so I don't want to put anything in there while trying to make my server work.
zipfe "localhost" or "0.0.0.0" is the same but I've tried the two and still didn't work. I also tried connecting with my PC's IP address with "25565" as port (since I used that to connect to my legit MC server) and still says bad login.