urllib2.HTTPError: HTTP Error 501: HTTPS Required

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================ Forge ModLoader Setup Start ===================
MCP Detected already, not downloading
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
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 "C:\Users\smartpunkk\Desktop\forge-1.6.4-9.11.1.1345-src\forge\fml\fml.py", line 1027, in decompile_minecraft
pre_decompile(mcp_dir, fml_dir, disable_assets=disable_assets)
File "C:\Users\smartpunkk\Desktop\forge-1.6.4-9.11.1.1345-src\forge\fml\fml.py", line 1075, in pre_decompile
download_minecraft(mcp_dir, fml_dir)
File "C:\Users\smartpunkk\Desktop\forge-1.6.4-9.11.1.1345-src\forge\fml\fml.py", line 1139, in download_minecraft
failed = download_libraries(mcp_dir, version_json['libraries'], mc_info['natives_dir']) or failed
File "C:\Users\smartpunkk\Desktop\forge-1.6.4-9.11.1.1345-src\forge\fml\fml.py", line 1195, in download_libraries
headers = get_headers(url)
File "C:\Users\smartpunkk\Desktop\forge-1.6.4-9.11.1.1345-src\forge\fml\fml.py", line 180, 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 501: HTTPS Required
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