MDW01

Try following these instructions:

Yes.

This is an issue with the host you will have to contact them. It is a common practice among hosts and server owners including myself to prevent read and write access outside of a specified directory for security reasons.

You have only posted part of it post the full log.

What part are you struggling to understand? Download the .jar version of the installer (not the Installer-Win variant) from Forge. Open the folder containing the downloaded file in Windows Explorer. Hold down shift and right-click an empty space, then select "Open command window here". In the new window type java -Djava.net.preferIPv4Stack=true -jar [name of the installer], replacing [name of the installer] with the complete file name of the installer, including the .jar file extension. Then hit enter.

If you want to clear everything out just delete all the profiles in the launcher. Make sure you launch vanilla Minecraft on the version of forge you want to install then install forge you shouldn't have to remove the versions from Minecraft directory if anything is wrong with them it will get fixed by doing this.

Post the actual log not a picture of it. That does not mean copy paste it in. Go upload the log file to GitHub gists or Pastebin.

Don't use the twitch launcher it causes more issues than its worth. Make sure you are using the exact version of optifine for the version of forge you are using. For example, optifine 1.12.1 is not compatible with 1.12.2 and so on.

Post your code. Do the mods have the same file name or mod ID?

No problem, glad you got it to work.

Post your code on Github. Are you building it through the command line or through your IDE?

Yes, please post the crash report. Be sure to include the entire logs/debug.log (logs/fml-{client/server}-latest.log for versions before 2629) found in your .minecraft folder / server root folder. Do not attach your logs to your post or use file-uploading services like Dropbox. Use Pastebin or Github Gists.

If you edit the launcher profiles one of the options is game directory create a separate game directory for each version.

1.7.10 is no longer supported on this forum update to receive further support. If you had read one more line of the crash report you would have seen: So remove IC2

I would gladly help with this but personally, I wouldn't start working on it until after 1.13 gets released so you don't have to do the update to 1.13.

Follow this:

Follow this:

1.7.10 is no longer supported on this forum update to receive support.

Forge does not make mods we cant help you with broken mods. Talk to the mod author about this.

Please post the crash report. You could also try to read it your self it may look like a bunch of jibberish but if it says error and then a mod name just remove that mod.

It is a separate program that you have to download. MCEdit is better for larger structures. http://www.mcedit.net

Yes, for large structures try using MCEDIT.

Could you be more specific about what you are asking for so we can give you a more relevant answer?

Make sure your computer and your java are 64-bit and that you are actually launching the server with the 64-bit version of java.

Do what it's telling you to do download the Minecraft server jar for your version and put it in the folder. You may have to rename it to 'minecraft_server.1.10.2.jar' so forge is happy.