Bukkit

What steps will reproduce the problem?
1. install craftbukkit 1.4.6
2. having a server crash due to memory overload
3. starting server again, with NO changes
4. plugin does suddenly not work anymore

What is the expected output? What do you see instead?
Loading the plugin correctly on craftbukkit start

What version of the product are you using?
3.2.5

Do you have an error log of what happened?
yes, log from server start:

2013-02-13 00:15:25 [SEVERE] Error occurred while enabling MobileAdmin v3.2.5 (Is it up to date?)
java.lang.ArrayIndexOutOfBoundsException: 4
    at net.kaltner.MobileAdmin.PlayerListener.loadChatLog(PlayerListener.java:121)
    at net.kaltner.MobileAdmin.MobileAdmin.onEnable(MobileAdmin.java:59)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
    at org.bukkit.craftbukkit.v1_4_R1.CraftServer.loadPlugin(CraftServer.java:282)
    at org.bukkit.craftbukkit.v1_4_R1.CraftServer.enablePlugins(CraftServer.java:264)
    at net.minecraft.server.v1_4_R1.MinecraftServer.j(MinecraftServer.java:321)
    at net.minecraft.server.v1_4_R1.MinecraftServer.e(MinecraftServer.java:300)
    at net.minecraft.server.v1_4_R1.MinecraftServer.a(MinecraftServer.java:259)
    at net.minecraft.server.v1_4_R1.DedicatedServer.init(DedicatedServer.java:149)
    at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:399)
    at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)

Please provide any additional information below.

The plugin mobile admin used to work under 1.4.6. Then after a server crash due to memory overload, the plugin did not work anymore, although **NO** changes were made, neither to the bukkit version, nor to any plugin or configuration, nor any other...
Meanwhile I am using 1.4.7: same problem