Error in CB Plug-in Database check

Am using:

Joomla: 2.5.6
CB: 1.8.1
unzip1st_cbtwc_1.5 (CB twitter)
plug_cbarticles-231
CB Articles 2.3.1

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I am getting the following yellow errors when I click check plugin database:

CB plugin "cbtwitter": cbtwitter has no readable xml file <span>/</span>home<span>/</span>public_html/components/com_comprofiler/plugin/user/plug_cbtwitter/cbtwitter.xml

CB plugin "CB Favoured articles": CB Favoured articles has no readable xml file <span>/</span>home<span>/</span>public_html/components/com_comprofiler/plugin/user/plug_cbfavouredarticles/favouredsarticles_cb.xml

CB plugin "CB Confirm Email": CB Confirm Email has no readable xml file <span>/</span>home<span>/</span>public_html/components/com_comprofiler/plugin/user/plug_cbconfirmemail/cb.confirmemail.xml

How can I fix the above

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Btw. I also have CB connect enabled. just in case if there is any conflict that I might not know of...

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Did you delete the folders for the plugins? Are those plugins grayed out in CB > Plugin Management? Typical fix for this is to simply re-install those plugins.

Kyle, they are grayed out. I will try reinstalling to see if that help.

Btw. do I need these twitter/facebook plugins if I install CB connect plug-in? They do the same job. Isn't it?

Kyle, they are grayed out. I will try reinstalling to see if that help.

Re-install should fix it for sure then. You can also uninstall them to remove them if wanted.

do I need these twitter/facebook plugins if I install CB connect plug-in?

Nope, CB Connect has Facebook and Twitter. Facebook Connect and Twitter Connect are minimized versions of CB Connects code; meaning CB Connect will always be superior.