CDFInformation looses size specification

Questions
, ,
1

Dear,

I created a CDF file with the following command:
``

 CDFInformation[Manipulate[Plot[Sin[a x + b], {x, 0, 2 \[Pi]}], {a, 1, 10, 1}, {b, 1, 20, 1}]]
 {"Size" -> {275, 254}, "EmbeddingScript" ->  "<script type=\"text/javascript\" \
src=\"http://www.wolfram.com/cdf-player/plugin/v2.1/cdfplugin.js\"></\
script>
<script type=\"text/javascript\">
var cdf = new cdfplugin();
cdf.embed('`1`', 275, 254);
</script>"}

As you can see the size width and height in pixels is 275x254. After I saved the notebook (only with the same Manipulate command) as a CDF file named “cdfinf” . After I tried to see the size through of CDFInformation command but it did not work, as you can see bellow (60x15).

CDFInformation["cdfinf"]

{"Size" -> {60, 15},  "EmbeddingScript" -> "<script type=\"text/javascript\" \
src=\"http://www.wolfram.com/cdf-player/plugin/v2.1/cdfplugin.js\"></\
script>
<script type=\"text/javascript\">
var cdf = new cdfplugin();
cdf.embed('`1`', 60, 15);
 </script>"}.

What was my mistake?
Thank you
Ana