Reduce allocated ram, 10gb is way to much and will cause issues for you.
for 1.7.10 and older 2-4gb is enough
for 1.10 and later 4-6gb is enough
(on some rare occasions there's packs that need around 6-8gb, but that should be avoided if not needed).
Try that first, then if it still fails, look for this in your log:
- -- Block Entity Details --
- Details:
- Name: railcraft:chest_void // mods.railcraft.common.blocks.single.TileChestVoid
- Block type: ID #1184 (tile.railcraft.chest.void // mods.railcraft.common.blocks.single.BlockChestVoid // railcraft:chest_void)
- Block data value: 0 / 0x0 / 0b0000
- Block location: World: (3086,60,2432), Chunk: (at 14,3,0 in 192,152; contains blocks 3072,0,2432 to 3087,255,2447), Region: (6,4; contains chunks 192,128 to 223,159, blocks 3072,0,2048 to 3583,255,2559)
- Actual block type: ID #0 (tile.air // net.minecraft.block.BlockAir // minecraft:air)
- Actual block data value: 0 / 0x0 / 0b0000
- Stacktrace:
- at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_192854_a(TileEntityRendererDispatcher.java:155)
- at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_180546_a(TileEntityRendererDispatcher.java:130)
- at net.minecraft.client.renderer.RenderGlobal.func_180446_a(RenderGlobal.java:705)
- at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1347)
- at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)
Remove/replace that block and try again.
If you still have issues after this, post new log - and/or talk to the server owner and ask what shows in the server log.
