Crafting recipe result disappears immediately when trying to craft

[dUc0N]

Title: Crafting recipe result disappears immediately when trying to craft

Version: 3.0.3/3.0.4

OS: Arch Linux x64

Java Version: Java SE Runtime Environment (build 1.7.0_05-b05) Java HotSpot 64-Bit Server VM (build 23.1-b03, mixed mode)

Description of Problem:

Whenever I try to craft something in the workbench or inventory crafting grid, the recipe's result will appear in the box when the recipe is completed but then immediately disappear again. No error messages were seen in the log that may correspond to this. The problem was happening 100% of the time with RecipeManager enabled, but once I removed it it's just an occasional issue that can be resolved by a server restart. Any idea what may be causing this, or where I can try to dig deeper into it?

I'm running an otherwise normal Tekkit server build, plus the following plugins:

ChatManager, ChopTree, CommandBook, iConomy, LWC, Modifyworld, Multiverse-, ore-2.4, Multiverse-Portals-2.4, PermissionsEx, runecraft2.12, SignReadMore, SkylandsPlus, WorldEdit

Error Messages:

None.

Error Log:

[VideoBoy]

What are you trying to craft? This is a known problem with crafting the Automatic Crafting Table MkII.

[dUc0N]

I tested it with a couple different recipes right as soon as we started the server up yesterday, didn't seem to recognize any of them. It happens in the crafting grid in the inventory, and in the vanilla workbench as well.

[Jay?]

Is anything banned on the server? have you tried crafting vanilla things? are you the only person on the server with this problem?

[dUc0N]

Nothing is banned, and I tried it with vanilla recipes. The problem is intermittent, so I'm not sure if anything static like a banlist is the issue.