View source for Troubleshooting

===Port Forwarding===
If you have a router, you will need to [http://portforward.com/ forward the port] to allow external players to connect. '''Default port is 25565'''. ConfigGUI includes a little tool for checking whether the port is forwarded properly - click the [Check] button next to port number setting, on "General" tab. Of course, the only way to be sure that port is forwarded properly is to ask someone remote to try joining your server.

===I made changed to the config/world list, but changes didn't apply===
* fCraft can read most changes on the fly using [[/Reload]] command. However, some things require a full restart:
** Ranks
** Worlds
** IRC settings
** Enabling/disabling BlockDB
* Make sure that ServerCLI and ServerGUI are NOT running while you run ConfigGUI. fCraft may overwrite your changes if it's still running.
* Changes are not saved until you hit "OK" or "Apply" in ConfigGUI.
* Make sure that ConfigGUI is in the same folder as the rest of the server files.

===Other players cannot connect from LAN===
Minecraft client has a lot of trouble working on LAN. You probably will not be able to connect via the public URL. Fortunately, there is a workaround:
# Enable "Allow connections from LAN without verification" checkbox in ConfigGUI's "Security" tab (or set AllowUnverifiedLAN to "true" in ''config.xml'').
# Find your local IP address.
#* In Windows XP+, go to Start -> type "cmd" to open a terminal -> type "ipconfig". The address you need is labeled "IPv4 Address" under "Local Area Connection".
#* In Unix/Linux, use "ifconfig" utility.
# Connect to [http://www.minecraft.net/classic/play?ip=_____&port=_____ http://www.minecraft.net/classic/play?ip=_____&port=_____] (fill in blanks with your server's IP address and port).

===How do I promote myself to the highest rank/class?===
Type the following in console (either fCraftConsole or fCraftUI): <code>/promote YourName DesiredClass</code>

===System.DllNotFoundException: libMonoPosixHelper.so===
Install <code>libmono-posix2.0-cil</code> package, if available.
This is also a known issue with compiling Mono from source on CentOS. Update to 2.10+ (recommended), or try [http://go-mono.com/forums/#nabble-td1537921 this workaround].

==="Could not verify player name"===
Verification problems are usually a combination of Minecraft.net problems and user error. Here are some things you can do to fix verification problems:
#If minecraft.net is offline or slow, wait for it to stabilize.
#If minecraft.net is working but you still cant verify name, log out then log back in.
#Try restarting your server. Wait a couple minutes before trying to connect to a newly-restarted server (to give your server time to synchronize with minecraft.net).
#If you (or your players) are using WoM client's "Resume" function, which uses cached verification information, use the proper log-in procedure in WoM. The "Resume" function only works as long as your IP does not change and as long as the server does not restart.

===Memory usage keeps going up under Mono===
If you are using Mono 2.6.x or earlier, you are out of luck. If you are running 2.8+, try running mono with "--gc=sgen" switch, like this: <code>mono --gc=sgen ServerGUI.exe</code>.
If you've tried everything and cannot get Mono memory usage under control, try setting the [[RestartInterval]] config key to make the server restart itself every once in a while.