Updated FAQ (markdown)

FAQ.md

@@ -5,3 +5,33 @@ Please watch the following videos that walkthrough the background and initial se
 
 ### IW4MAdmin Setup - Basic Walkthrough (Windows)
 [![IMAGE ALT TEXT](http://img.youtube.com/vi/xpxEO4Qi0cQ/0.jpg)](http://www.youtube.com/watch?v=xpxEO4Qi0cQ " IW4MAdmin Setup - Basic Walkthrough (Windows)")
+
+## Common Issues
+### Could not communicate with [IP:Port]
+This is always a configuration error.  
+Note — IW4MAdmin configuration is stored as a text file in `Configuration/IW4MAdminSettings.json`  
+
+**Make sure your server is running and has a map loaded**  
+**Make sure your rcon password is not commented out (remove the forward slashes before)**  
+```
+// rcon_password "this is wrong"
+rcon_password "this is right"
+```
+
+- You can verify this by entering `rcon_password` or get `rcon_password` (for Plutonium T6/IW5) into the server console and comparing the output with IW4MAdmin configuration to make sure they are identical.
+
+**Make sure the port the server is running on matches what you entered for IW4MAdmin**
+- You can verify this by entering net_port or get net_port (for Plutonium T6) into the server console and comparing the output with IW4MAdmin configuration
+
+**Your router may not support NAT Loopback**  
+- If you are hosting from a home PC, try changing your server IP in the IW4MAdmin configuration to 127.0.0.1
+
+### Commands not responding
+**Make sure your game log file is being created and log sync is turned on**  
+- Each server must have a unique log file name set in the configuration via the `g_log` dvar 
+- Example — `set g_log "my_server_hostname_mp.log"`
+- `g_logsync` must be set to always flush (1) for IW4x, (2) for T6
+- Example — `set g_logsync 1`  
+
+**If you are running IW4MAdmin remotely, you must setup the [game log server](https://github.com/RaidMax/IW4M-Admin/wiki/Game-Log-Server) python script**  
+**If you entered the log path manually, ensure it's correct**