MissingSectionHeaderError: File contains no section headers

I am trying to build collective.simserver according to this manual, with some modifications:

instead of: virtualenv --python=bin/python2.7 simserver/
I am using: virtualenv --python=myVirtualEnv/bin/python simserver

and I managed to come to this point:

myVirtualEnv/bin/python bootstrap.py

and then it breaks apart with this error info:

An internal error occurred due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
  File "/tmp/tmpLiHZgo/zc.buildout-1.6.3-py2.6.egg/zc/buildout/buildout.py", line 1851, in main
    command)
  File "/tmp/tmpLiHZgo/zc.buildout-1.6.3-py2.6.egg/zc/buildout/buildout.py", line 203, in __init__
    data['buildout'].copy(), override, set()))
  File "/tmp/tmpLiHZgo/zc.buildout-1.6.3-py2.6.egg/zc/buildout/buildout.py", line 1465, in _open
    parser.readfp(fp)
  File "/usr/lib/python2.6/ConfigParser.py", line 305, in readfp
    self._read(fp, filename)
  File "/usr/lib/python2.6/ConfigParser.py", line 482, in _read
    raise MissingSectionHeaderError(fpname, lineno, line)
MissingSectionHeaderError: File contains no section headers.
file: /home/nenad/buildout.cfg, line: 4
'<!DOCTYPE html>n'
Mint-AMD64 nenad # 

What might be wrong?

Answer

There is no section header in the configuration file.

The configuration file consists of sections, led by a [section] header and followed by name: value entries.

Docs CofigParser python module