rsims

I had a similar “Cannot modify header information – headers already sent” error message that pointed to wp-includes/pluggable.php

What finally corrected the problem was to roll-back my wp-config file to a version saved prior to upgrading to 2.1

Go figure.

Have you tried manually fixing from the Code tab and then publishing? As of 2.3.1 the WYSIWYG Visual mode still messes with slideshare embedded code. Going straight to Publish from Code (without ever going back to Visual mode) works for me.

Sounds like you are in the Visual edit mode, not the Code edit mode.

From /***/wp-admin/post-new.php , click on Code tab (moving from the default Visual WYSIWYG mode, if there)

Cut and paste code from SlideShare ‘Embed in your blog’

Note: as noted by drmike above, not the ‘Embed (wordpress.com)’ code unless you are using WordPress for hosting.

Caveat: If you go back to Visual mode, (seen in WP 2.3.1) behind the scenes, WordPress messes with the code, typically moving the “/object” tag up in the code block

What I do, which saves considerable frustration:

1. Write the complete post without the embed code, leaving myself a placeholder note as in “[insert slideshare here]”
2. After all previews and any editing, go to Code tab if not already there, replace the placeholder note with cut-and-pasted code from SlideShare
3. Click on ‘Publish’ (never going into Visual mode)

From /***/wp-admin/post-new.php , click on Code tab (moving from the default Visual WYSIWYG mode, if there)

Cut and paste code from SlideShare ‘Embed in your blog’

Note: not the ‘Embed (wordpress.com)’ code unless you are using WordPress for hosting.

Caveat: If you go back to Visual mode, (seen in WP 2.3.1) behind the scenes, WordPress messes with the code, typically moving the “/object” tag up in the code block

What I do, which saves considerable frustration:

1. Write the complete post without the embed code, leaving myself a placeholder note as in “[insert slideshare here]”
2. After all previews and any editing, go to Code tab if not already there, replace the placeholder note with cut-and-pasted code from SlideShare
3. Click on ‘Publish’ (never going into Visual mode)