plugin source code shows beneath the picture slide

flash gallery has this code ….

[flagallery gid=2][Best_Wordpress_Gallery 

gallery_type="slideshow" theme_id="1" gallery_id="1" 

sort_by="order" slideshow_effect="fade" 

slideshow_interval="5" slideshow_width="800" 

slideshow_height="500" enable_slideshow_autoplay="0" 

enable_slideshow_shuffle="0" 

enable_slideshow_ctrl="1" 

enable_slideshow_filmstrip="1" 

slideshow_filmstrip_height="90" 

slideshow_enable_title="1" 

slideshow_title_position="top-right" 

slideshow_enable_description="1" 

slideshow_description_position="bottom-right" 

enable_slideshow_music="0" slideshow_music_url="" 

watermark_type="none" watermark_link="http://web-

dorado.com"]

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…..and it shows when the photo pae is

loaded, beneath the picx on display.how do i stop

the browser from reading them as ordinary text.

I am running the 3.7.1version

https://wordpress.org/plugins/flash-album-gallery/