Why is the program asking for a password to color a PDF. I changed the end to png and it was working and now quit

Question

I was using PDF from a nonprofit i work for to color with PS Elements. It worked and then no longer allows me to drop files into PS Elements.
First I download the PDF's ....then I change the end from PDF TO .png and then drag and drop into PS Elements ....color .....
Then I put the files into DropBox  and send them to iphoto to use in Doceri
FIrst the error message was about Parse
Now the message is that I need a password to use the program.
Friends all over the country can get this to work but it is NOT WORKING. I emptied and redownloaded dropbox.....not the problem.
We set up a dummy account and still could nto use.

Answer 1

PSE asks for a password when the file was password protected by whoever created it. You can't really expect decent results if you just change the extension of a file. A PDF is a very different animal than a png file and contains very different information, so it's not surprising your results are poor. That's the sort of thing you may get away with once in a while, but you can't expect to use it as a regular workflow.
Your whole procedure sounds extremely complicated for no particular good reason, at least as you describe it. It would be simpler to open the pdf in Preview and save a copy as a png if that's the format you need, but saving a pdf as anything other than a pdf will generally create a lousy looking file. I would just leave PSE out of the equation here, since you don't seem to be doing any editing with it.