Kaptinobvius

I'm 99% sure you are speaking of my server, and We have not updated to the new version because of all these problems yet. Downgrade you client back to 1.0.8 and you can join again.

There are 2 major issues with this update causing this problem. One is the project red removing java 6 support, which is fixed by following the directions in the OP here. But the other one is a Dimensional ID conflict beween Galacticraft Space stations and Witchery's new dimension just added. If there are 8 or more space stations on your server, then DIM9 is being taken by one. Wichery's new dimension is trying to function in DIM9 as well, causing client side crashes. Server owners CANNOT simply change the ID in the config, because the client config is mismatched and still crashing. The only way to fix this is for server and client to both change the ID of the dream world in the witchery config to match.

Did you actually place the item prior to crashing, or is it just in your inventory?

Have you tried killing the chicken? If not, you may need to get the location of the region file and delete it from you world/region folder.

Verify that both the server and client have the same version of the modpack. If there is a version mismatch it will not let you join, and will tell you its not installed.

Crash Reports help too. Check to see if you are getting one in your B-team folder.

Block location: World: (-4431,49,1318) This is the location of the oven crashing you. If you have another admin or someone with World Edit perms, have them replace it with stone or something.

Im not sure what you mean here. What I mentioned is already possible with strongboxes. You can place a full strongbox inside another strongbox without worrying about losing what is saved in the inventory. If you hold shift while mousing over the strongbox it lists the contents.

Delete all the mods and re-install the server files from scratch.

Stone tools are made with stone, not cobble. Cook your cobble and try again.

Pathfinding is turned off for those mobs due to some conflicts with other mods I believe. Bad logins are fairly common, your best bet to get in after one is to completely close the launcher to your desktop. Reload it, and try again.

1.0.7a was far more broken than 1.0.8 lol

I believe those are from ButterDungeons.

We went with both ways. Running a PvE and PvP version. One with protections and block logging, the other with raiding/pvp and anything goes. So far we have had very few issues with people utilizing the things that bypass, but we did have to ban quite a few things on the PvE to keep ourselves sane.

They may not be stackable in your inventory, but being able to place them within eachother and move entire bases using a single inventory slot is quite OP.