Errors with PluginDescriptionFile and Narrowtux Bukkit 1.2.4 #2126

[moritzhoewer]

When I start Showcase with Bukkit 1.2.4 Build #2126 I get this Error Log:
No other Mods were used.

[INFORMATION] [NarrowtuxLib] Enabling NarrowtuxLib v1.3.1
[INFORMATION] Version: 131
[INFORMATION] [NarrowtuxLib] v1.3.1 by [narrowtux] enabled.
[INFORMATION] [Showcase] Enabling Showcase v0.8.1.32
[SEVERE] Exception in thread "Thread-8"
[SEVERE] java.lang.NoSuchMethodError: org.bukkit.plugin.PluginDescriptionFile.getAuthors()Ljava/util/ArrayList;
[SEVERE] Plugin Showcase is attempting to register event com/narrowtux/dropchest/api/DropChestSuckEvent, which does not exist.
Ignoring events registered in class com.narrowtux.showcase.event.DropChestListener
[SEVERE] at com.narrowtux.showcase.Metrics.postPlugin(Metrics.java:217)
[SEVERE] at com.narrowtux.showcase.Metrics.access$100(Metrics.java:55)
[SEVERE] at com.narrowtux.showcase.Metrics$1.run(Metrics.java:191)
[SEVERE] at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:34)
[SEVERE] at java.lang.Thread.run(Thread.java:722)
[INFORMATION] [Showcase] Registered type [basic](0 items loaded)
[INFORMATION] [Showcase] Registered type [finite](0 items loaded)
[INFORMATION] [Showcase] Registered type [infinite](0 items loaded)
[INFORMATION] [Showcase] Registered type [exchange](0 items loaded)
[INFORMATION] [Showcase] Registered type [tutorial](0 items loaded)
[WARNING] Permissions not found! All Operations are allowed!
[INFORMATION] [Showcase] version 0.8.1.32 has been enabled.