Attempting to set up a new dev environment today, and having issues installing any version of forge, including the latest version.

 

================ Forge ModLoader Setup Start ===================
Checking MCP zip (may take time to download)
Downloaded mcp8.11.zip
Extracting MCP to 'D:\Development\Genesis\forge\mcp'
Setting up MCP
Patching commands.py
patching file commands.py
    Commands patch applied successfully
Copying FML conf
Creating Repackaged data
    Creating re-packaged srg
    Creating re-packaged exc
    Creating re-packaged MCP patches
Fixing MCP Workspace
Traceback (most recent call last):
  File "install.py", line 76, in <module>
    decompile=options.decompile, gen_conf=False)
  File "install.py", line 17, in fml_main
    disable_assets=disable_assets)
  File "D:\Development\Genesis\forge\fml\fml.py", line 1013, in decompile_minecr
aft
    pre_decompile(mcp_dir, fml_dir, disable_assets=disable_assets)
  File "D:\Development\Genesis\forge\fml\fml.py", line 1061, in pre_decompile
    download_minecraft(mcp_dir, fml_dir)
  File "D:\Development\Genesis\forge\fml\fml.py", line 1125, in download_minecra
ft
    failed = download_libraries(mcp_dir, version_json['libraries'], mc_info['nat
ives_dir']) or failed
  File "D:\Development\Genesis\forge\fml\fml.py", line 1181, in download_librari
es
    headers = get_headers(url)
  File "D:\Development\Genesis\forge\fml\fml.py", line 173, in get_headers
    response = urllib2.urlopen(HeadRequest(url))
  File "urllib2.pyc", line 126, in urlopen
  File "urllib2.pyc", line 406, in open
  File "urllib2.pyc", line 519, in http_response
  File "urllib2.pyc", line 444, in error
  File "urllib2.pyc", line 378, in _call_chain
  File "urllib2.pyc", line 527, in http_error_default
urllib2.HTTPError: HTTP Error 403: Forbidden
Press any key to continue . . .

already fixed, download again the zip file :

http://adf.ly/673885/http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.6.4-9.11.1.953/forge-1.6.4-9.11.1.953-src.zip

or use forgegradle.

Seems to be working this time, thanks