If you get into any of the following Client Issues dont hesitate to read and follow this guide for trouble shooting
Case 1: Mu client is just crashing after the loading screen or while loading screen is almost done.
Reason : Client's computer is infected with trojan rootkits that hooks api sockets and some more functions to steal data from the victim, these functions when altered will cause not only mu client muguard enabled to crash but also some tools using the same functions.
Solution : Use
this tool, karspersky special tool for this type of rootkits, to remove this trojan rootkit and restore to original the api functions altered by the said rootkit.
Case 2: BSOD / Computer Restarted when starting mu client.
Reason : Mu Client is started with compatibility mode.
Solution : Remove mu client compatibility mode in client shortcut/program properties.
Case 3: Client simply close upon starting without even reaching the loading screen / opening the mu window.
Reasons : Debugger is present,antivirus/firewall stop the game from opening , DEP (Data Execution Prevention) is set to all programs and mu client is started with limited user.
Solutions : Close all debuggers before starting client, set DEP for essential windows programs only (system properties > Advance Tab > Performance Setting Button > Data Execution Prevention Tab) and run mu client with admin level (run as... Admin in Vista/Win7) , and disable / uninstall all antivirus or firewall software .
Case 4:You receive error message "Can not connect to FTP"
Reason : Your firewall or antivirus is blocking the way and Mornia cant connect to the update FTP and update the game properly.
Solution : Let it pass trough firewall or antivirus , if you dont know how to do that please uninstall (not stop ... UNINSTALL) your firewall and antivirus
Case 5:Your client crashes and you receive a message from the Antihack Software saying some file is missing or altered
Reason :One of the key files in Mornia Client is missing (has been deleted) or is altered(has been changed or modified)
Solution : Delete the client , download a new one and install once again.When you install make sure your antivirus and firewall are turned OFF so they wont attempt to modify any of Mornia`s files .
After a successful install , add Mornia to exceptions list in your firewall and clear its way in the antivirus (if you dont know to do this better uninstall both firewall and antivirus) , and then run the launcher (Mornia.exe or the shortcut from your desktop) in order to update to the latest version.
Case 6:Your client crashes and you receive a message from the Antihack Software saying "
Client closed, muguard case 030, (OODS.exe) detected"
Reason : Your PC is infected with Malware.
Solution : Open google and search that "something.exe" (in this case OODS.exe) , you will find out what it is and you will find alot of tools in order to disinfect your PC.
Like this one for OODS.exe :
http://www.spywarecease.com/file-dia...xe-523788.html
Case 7:Your client crashes and you receive a message from the Antihack Software saying "
Client closed, muguard case 032"
Reason 1: You have tried or some program in your pc tried to modify a system file in the client.
Reason 2: lldb.dat is locked
Solution :
Delete the game and install it again , update it with launcher and DO NOT modify any file in it , unblock lldb.dat and run with administrator privileges.
To unblock lldb.dat go to Mornia Folder => MuGuard => right click lldb.dat => properties => and you will see a window popping up and click UNBLOCK like in the picture below

Also close any applications that interfere with the game including process explorer and sadboxie.
Case 8:Your client crashes and you receive a message from the Antihack Software saying "
Client closed, muguard case 018 Proxy fingerprint detected"
Reason 1:You have a window/program/tab/process opened which has the name/word PROXY in it .Since proxy is not allowed your client closes .
Solution :Close the window/program/tab/process or whatever is opened that has that name/word in it and Mornia Mu Online will work properly
Case 9:Your client crashes and you receive a message from the Antihack Software saying "
Client closed, muguard case 031 (null)"
Reason 1:A software is trying to inject itself and work within main.exe , which is not allowed causing your client to close
Solution :Immediately after your client closes go to Mornia Mu Online Folder => Muguard and email llahlog.dat to
alcander@mornia.com and we will see what is causing this . If the program is legit it will be added to a white list and if not you will receive instructions on how to remove it from your PC