DaemonUmbra

What site are you downloading Forge from? Please give the URL.

How long have you let it sit before killing it?

1.7.10 is no longer supported on these forums due to its age. Please update to a modern version of Minecraft to receive support.

ConcurrentModificationException Reading crash logs takes knowing the vernacular as well as knowing at least a little bit of what's going on under the hood in that specific case, though a general understanding of programming principles is always a good start.

If it happens again please screenshot the address bar so Lex can report the Ad ID to adfocus.

Screenshots may help clear things up.

You don't... it's a position that is offered, not applied for.

Making updates to software is not the same as porting a framework from one programming language to another. There is also the fact that Bedrock Edition (the multiplatform/console version) is written in C++, which cannot be decompiled and examined in the way Java can. Even if Bedrock could be decompiled there is no promise that the internals are even remotely similar. Thread Closed. As Lex has said:

This usually helps.

The simplest way would be to open Powershell with the right-click method, then type in cmd and press enter, this will swap to a command prompt while using the same window and staying pointed at the same folder, then use the command given in the other thread.

Old Thread, Old Version. If you have an issue please make your own thread. If you are still using 1.4.7 you will not receive support on this forum.

Or you could just use the Profiles functionality of the Minecraft Launcher.

That looks like a corrupted world. You likely have to start over. How are you closing your server?

From the looks the server is crashing when it tries to read one of them, if there's nothing in them just delete them, and remember to use /stop to stop the server cleanly.

What do your Op, Ban, and Whitelist files look like?

Bug with buildcraft facades, if you are using the recommended version of Buildcraft report it to the author(s), if not try updating.

This is described in my signature... please read it

Please post logs as described in my signature below

It depends on what you mean by "installed". Optifine can run with or without Forge, but the installation procedures are different. Double clicking and having Optifine install itself will have it add itself as a game version, this method would not allow Forge to run. Dropping Optifine into your mods folder will have Forge run Optifine as a mod. Note that Forge run Optifine does not always work as Optifine's nature means it's devs have to pick specific Forge versions and do their best not to tread on Forge's toes. These specific Forge versions are noted in Optifine's changelog for each version.

1.7.10 is no longer supported on this forum due to its age. Please update to a modern version of Minecraft to receive support.

Please don't necro old threads. Please make your own thread, following the instructions from the EAQ.

Check out Launcher Profiles.

1.7.10 is no longer supported on these forums due to its age. Please update to a modern version of Minecraft to receive support.

That explains it. We don’t provide support for 1.7.10 anymore due to its age. Please update to a modern version of Minecraft to receive support.

No modern mod should be distributed as zip file. What version of Minecraft are you using and what’s the mod?