Próbuję podzielić pliki PDF na obrazy za pomocą docsplit. Ale wygląda na to, że mam problemy z moją instalacją ruby. Za każdym razem otrzymuję następujący błąd:

/usr/lib/ruby/1.8/fileutils.rb:694:in `remove_entry_secure': parent directory is world writable

Oto pełne wyjście wiersza poleceń:

$ docsplit images pdf-test.pdf
/usr/lib/ruby/1.8/fileutils.rb:694:in `remove_entry_secure': parent directory is world writable, FileUtils#remove_entry_secure does not work; abort: "/tmp/d20130207-6739-1f9i6b" (parent directory mode 42777) (ArgumentError)
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:51:in `convert'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:19:in `extract'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:19:in `each'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:19:in `extract'
    from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `each_with_index'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:18:in `each'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:18:in `each_with_index'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:18:in `extract'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:16:in `each'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit/image_extractor.rb:16:in `extract'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/lib/docsplit.rb:63:in `extract_images'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/bin/../lib/docsplit/command_line.rb:44:in `run'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/bin/../lib/docsplit/command_line.rb:37:in `initialize'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/bin/docsplit:5:in `new'
    from /var/lib/gems/1.8/gems/docsplit-0.6.4/bin/docsplit:5
    from /usr/bin/docsplit:19:in `load'
    from /usr/bin/docsplit:19

Jakieś pomysły, jak to naprawić?