ProffessorJonty

Ah I see. The server I'm hosting with runs on Java 6, hopefully Java 7 within the next few weeks. Thanks for the help.

Launcher version: Tekkit 2.1.0 (client)/2.1.1 (server) OS: Windows 7 64 bit Java version: 7 64 bit Description of problem: It's a problem I've just come across on my Tekkit server; when crafting a rotary macerator, the block appears, but then disappears suddenly from the crafting box, as if the mod was not installed (this is also reported by everyone on the server). This doesn't happen with any other block, at least that I know of. Has anyone else found this? I realise 2.1 isn't the latest version of Tekkit, but I'm not currently in a position to upgrade. Thanks.