Thanks posting the error message (and for using this pastbin service). This error message is basically parts of the HTML code of the 404 page of your blog.
Have you copied this code from the box which should show the detected file size or duration?
Although I cannot say why this happens in your blog, I can say that this has most likely nothing to do with the upgrade to WP 3.3 or at least that this is not a problem in all blogs with WP 3.3 (I have upgraded to WP 3.3 and have no such problems).
Have you installed further plugins recently?
The Auto Detect buttons use AJAX technique to retrieve the file size, the duration and the ID3 tags. This means that a click on one of these button starts a HTTP request for a certain file of podPress which includes the necessary functions. Something stops or interrupts those requests and the result is the 404 page of your blog.
One cause is usually that the URL of request was wrong or that the permissions which regulate the access to the file (or the folder) are to restrictive. But there are other possibilities too.
Please, control the permissions for the podpress folder and the file within. 0644 and 0755 should be okay.
A security plugin or a plugin which influence the Permalink scheme might be involved. That is why I would like to know which other plugins are installed and active in your blog.
Does it change the situation if you deactivate the other plugins? (If it does make a difference, could you find out which one of the other plugins is involved?)
There is a further mechanism to get more information about the process of retrieving these meta data from the media files.
In the file podpress.php you can find the line (127):
if ( ! defined( 'PODPRESS_DEBUG_LOG' ) ) { define( 'PODPRESS_DEBUG_LOG', FALSE ); }
Change it to
if ( ! defined( 'PODPRESS_DEBUG_LOG' ) ) { define( 'PODPRESS_DEBUG_LOG', TRUE ); }
and podPress will try to log all actions which follow a click on one of these 3 buttons in a log file in the podpress folder.
But this is only possible if the configuration on the server of your blog allows PHP scripts to create files and to write into files. Sometimes that is not allowed. In this case you would get different error messages and you should set the constant back to FALSE.
But if podPress is allowed to create a log file then it would be great if would document one attempt to retrieve the file size and one attempt to retrieve the duration.
I recommend that you set the constant back to FALSE afterwards.
...and unfortunately is currently showing 0:01 run time and no download size...
You feed includes the duration and the file size data for episode 1 and 2. I guess iTunes is going to update this at least with the next episode.
But you are right if you would not declare the duration and the file size, it is not possible to use the play button of the episode if one views the page of your podcast inside the iTunes client software. That why it is it is important to insert those values manually if the auto detection does not work.