Just installed the Comment 5.3.3-pro
Joomla 2.5.28
PHP = 5.3.29
Linux Apache
[color=#ff0000] Plugin Install: Another plugin is already using directory: /home/DIRECT/public_html/plugins/koowa/ccomment
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/el-GR/el-GR.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/en-GB/en-GB.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/es-ES/es-ES.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/fr-FR/fr-FR.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/hr-HR/hr-HR.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/nl-NL/nl-NL.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/pl-PL/pl-PL.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/pt-BR/pt-BR.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/ru-RU/ru-RU.plg_plug_usercomments.ini
JFile: :copy: Cannot find or read file: $/home/DIRECT/public_html/tmp/comment/components/com_comprofiler/plugin/user/plug_usercomments/administrator/language/sv-SE/sv-SE.plg_plug_usercomments.ini[/color]
I have checked the source files, and these files ARE present.