Im sad, And cant do singleplayer as nothing renders by itself, Only way that is similar to this is FTB
Expert opinions! Based on the error message and what I can gather from the RP2 code and how Eloraam does what she does, this crash-bug is caused by a block (in this case a RP2 placeable) in the world that is carrying a metadata value that is not used by RP2. This block will cause a crash for anyone who is in, or is entering the area. The methods of alleviating this issue are as follows: Have someone with server access remove the fractious block w/ a third party editor, Use WE to regen/delete modded blocks within an approximate area. Wait until the MC-API is implemented which will have better exception handling than Forge currently has. Avoid the area. It will be up to the persons affected to contact the appropriate people to help resolve this issue. Information that will be helpful would be the ID's and metadata values of the "Unnamed" items. (Will make it much easier to remove the block.) NOTE: The circumstances for this error are different from the circumstances in the referred FTB forum thread; however, they both manifest in the same way.
If I remember correctly it should have been impossible to actually place one of these blocks on the ground as it crashed the client as soon as it is in your hand. I had this happen to me as well, luckily I found a way to fix it. The crash happens when it attempts to render the item being held in your hand, when you join the server it registers commands before it starts rendering. So here is what you have to do to fix it, as soon as you start joining the server mash a number key as fast as you can, hopefully it will change your held item to another slot before it tries to render the bad block. You just have to make sure that the number that you are mashing does not match the slot that the bad item is in. I had these unnamed blocks appear in my frame quarry as well. As soon as I held it in my hand I was crashed just as you were and this is how I fixed it.
Thx Nolan and hsun, Gonna try to select another slot in my hotbar. Well, if I recall correctly, the item is is the same as a support frame (765, but not 100% sure about that) with :1 instead of :3 (frame would be 765:3, the item is 765:1) and it's placed 2 blocks above my computer on the frame (there's a redstone tube frame in between.)
