I have Mc 1.64 +
MCPC+ latest (MCPC+ version git-MCPC-Plus-jenkins-MCPC-Plus-164-250 (MC: 1.6.4) (Implementing API version 1.6.4-R2.1-SNAPSHOT)
)

and Prism version 2.0Beta6-MCPC-MC1.6-20-g300224e-SNAPSHOT

see below "Caused by: java.lang.NoSuchFieldError: actionsRecorder"

13:42:47 [INFO] [OtherDrops:2.8b.566] PerformDrop: scheduling THIS
13:42:47 [INFO] [OtherDrops:2.8b.566] Tool damaged.
13:42:47 [INFO] [OtherDrops:2.8b.566] PerformDrop: scheduling GLASS
13:42:47 [INFO] [OtherDrops:2.8b.566] PerformDrop: blockbreak or fishing - not default drop - cancelling event (dropcount=2).
13:42:47 [SEVERE] Could not pass event BlockBreakEvent to OtherDrops v2.8b.566
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:437)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:31)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:479)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:464)
at org.bukkit.craftbukkit.v1_6_R3.event.CraftEventFactory.callBlockBreakEvent(CraftEventFactory.java:807)
at net.minecraftforge.event.world.BlockEvent$BreakEvent.(BlockEvent.java:77)
at net.minecraftforge.common.ForgeHooks.onBlockBreakEvent(ForgeHooks.java:472)
at net.minecraft.item.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:361)
at net.minecraft.item.ItemInWorldManager.func_73082_a(ItemInWorldManager.java:302)
at net.minecraft.network.NetServerHandler.func_72510_a(NetServerHandler.java:790)
at net.minecraft.network.packet.Packet14BlockDig.func_73279_a(Packet14BlockDig.java:67)
at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:470)
at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:233)
at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(DedicatedServerListenThread.java:34)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:910)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:330)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:777)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:659)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.NoSuchFieldError: actionsRecorder
at com.gmail.zariust.otherdrops.Dependencies.queueBlockBreak(Dependencies.java:306)
at com.gmail.zariust.otherdrops.OtherDrops.clearDrops(OtherDrops.java:387)
at com.gmail.zariust.otherdrops.OtherDrops.performDrop(OtherDrops.java:316)
at com.gmail.zariust.otherdrops.listener.OdBlockListener.onBlockBreak(OdBlockListener.java:115)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:435)
... 20 more
13:42:52 [INFO] [OtherDrops:2.8b.566] PerformDrop - potential drops found: [BREAK on ANY_CREATURE drops DENY] tool: [LAVA]
1

I added
import me.botsko.prism.actionlibs.RecordingQueue;
and

// Prism.actionsRecorder.addToQueue(ActionFactory.create( "block-break", block, playerName));
RecordingQueue.addToQueue(ActionFactory.create( "block-break", block, playerName));

but I have to leave the building to you since
I'm not sure what version you used for the other externals
IE DropMoney for example API does not appear to match either...

Will that be solved in an upcoming update? (since zarius seems to be active again :D )

[bump] we'd sure love to be able to use prism and otherdrops together again -- but still getting the same block break error, using latest otherdrops dev build and latest prism 2.0.4

Could we get an update?

http://pastebin.com/1uVKtz3G