Condition: Bad parameter message when trying to delete pages using Acrobat 9.0 (editing a file created in Word 2007, using File Save as .PDF).
Why not just print to the PDF print driver? Well, in this document, it mysteriously "hangs up" when it gets to a large collection of graphics. The file is 404 pages, and it hangs (even 24 hrs. doesn't move on) at page 225. So, Word's File Save As command is my only hope. (Adobe cannot solve the file hanging up issue, so Word 2007 is my work around.)
Meanwhile, I get the Bad Parameters problem when I try to edit the Word-created .PDF file.
The solution? It's not too savvy, but it works reliably for me. In essence, I create a blank .pdf file using the preferred PDF print driver (to create a "correct" internal file header).
Then I use Document ... Insert Pages from, and insert the full file (that was created using Word 2007's File Save As command).
With me so far? Now I have a blank page + my full 404 page file, and I just delete the blank page at the beginning. Adobe Acrobat now treats the entire file as though it were created via the Adobe PDF print driver.
Wow, this is really an old-folks' solution -- to create a new file header (start a new file) and insert whatever is corrupted into the fresh file. It works more often than you might imagine.
Good luck !
C. Harp (Atlanta, GA)
Mama B