No such file to load --initializer

Hi all,
issuing the command “$rake gems” in a rails-application folder leads
to the error “no such file to load – initializer”
I am on centos5.2, ruby 1.9.2.p0, rubygems 1.3.7, rails 3.0
irb → require ‘rubygems’ => false

echo $GEM_PATH leads to /usr/local/lib/ruby/gems/1.9.1
gem environment leads to

RubyGems Environment:

  • RUBYGEMS VERSION: 1.3.7 - RUBY VERSION: 1.9.2 (2010-08-18 patchlevel
  1. [x86_64-linux] - INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/
    1.9.1 - RUBY EXECUTABLE: /usr/local/bin/ruby - EXECUTABLE DIRECTORY: /
    usr/local/bin - RUBYGEMS PLATFORMS:
  • ruby
  • x86_64-linux
    GEM PATHS:
    /usr/local/lib/ruby/gems/1.9.1
    GEM CONFIGURATION:
    :update_sources => true
    :verbose => true
    :benchmark => false
    :backtrace => false
    :bulk_threshold => 1000
    REMOTE SOURCES:
    http://rubygems.org/ gem itself works

Rails 3.0.0, Railties 3.0.0, Rake 0.8.7 via gem install gives no
error.

rake gems --trace

rake aborted!
no such file to load – initializer
internal:lib/rubygems/custom_require:29:in require' <internal:lib/rubygems/custom_require>:29:in require’
/opt/lampp/htdocs/clockingit/config/boot.rb:55:in load_initializer' /opt/lampp/htdocs/clockingit/config/boot.rb:38:in run’
/opt/lampp/htdocs/clockingit/config/boot.rb:11:in boot!' /opt/lampp/htdocs/clockingit/config/boot.rb:110:in <top (required)>’
internal:lib/rubygems/custom_require:29:in require' <internal:lib/rubygems/custom_require>:29:in require’
/opt/lampp/htdocs/clockingit/Rakefile:4:in <top (required)>' /usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2383:in load’
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2383:in
raw_load_rakefile' /usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2017:in block in load_rakefile’
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2068:in
standard_exception_handling' /usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2016:in load_rakefile’
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2000:in
block in run' /usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2068:in standard_exception_handling’
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:1998:in
run' /usr/local/lib/ruby/gems/1.9.1/gems/rake-0.8.7/bin/rake:31:in <top
(required)>’
/usr/local/bin/rake:19:in load' /usr/local/bin/rake:19:in

Application clockingit

Any hint where to search further would be apricated
Thanks in advance
Andreas