So far I've deleted preferences by clicking shift, control, option right after launching. The window came up to remove preferences I clicked yes. I quit the program, and restarted my computer but it still was crashing when I tried to save anything.
Next I tried removing it this way:
Program Files\Adobe\Photoshop Elements 9\Locales\<locale>\Plug-Ins\Import-Exportand you will find twain plug-in.
When I did this, I tried it 3 times. The first 2 times I dragged the twain plug in to my desk top, but it seemed to still remain in place. The third time I clicked twain plug in and moved it to trash. Again, I quit program, restarted my computer, and it's still quits everytime I try to save anything.