Duplicate problem with the_excerpt() function

Hi.

I changed post.php “the_content()” to “the_excerpt();”, but the share message duplicated too.

if i change back, everything fine.

See this:

http://lelkiegeszseg.l2-info.eu/wp-content/uploads/2014/01/1.png

If i change the message name, the duplicate change too:

http://lelkiegeszseg.l2-info.eu/wp-content/uploads/2014/01/2.png

How can i fix it?

http://ww.wp.xz.cn/plugins/simple-share-buttons-adder/

[Moderator Note: No bumping, thank you.]