Further information on psnGallery2 tags/functions
Out of a post (eg: in index.php) // Generate tags to display several random pictures…
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due to a small little tiny bug, the size selection is not working.
To fix the issue :
in function psnExtractTags($cBuffer, $cTag, $cEval), search for $GalleryTag = substr($GalleryTag,0,strpos($GalleryTag, "« )-1); find the line of code, simply remove the « -1« .