#HOW TO UNINSTALL LEXMARK 5400 SERIES DRIVER#
(25) install, again, the driver you previously downloaded. (23) repair disk permissions using Disk Utility (21) sudo rm /private/var/log/system.log.*.bz2 (20) sudo rm /private/var/log/install.log.*.bz2 (19-c) (try scanning - if it still doesn't work continue down the list. (19-b) search your system for an application called Lexmark X5400 Series Center, and launch it. (19-a) you'll get a dialog asking you to download software for (your printer should be on and in copy mode) (19) plug in the printer (to power and your computer) and scan for printers until you find your printer. (18) In Lexmark setup assistant, say "My printer is already set up" Let me suggets keeping a copy for next time you need to scan something). You can find it here, or else through an internet search (it has been deleted from many sites, but it still can be found. (16) Lexmark has deleted this driver from its website as of October 2011.
Sharp's unique Sleep mode 1 IBM/LEXMARN PRINTERS Lexmark WinWriter 600. (12) sudo rm ~/Library/Preferences/ByHost/com.lexmark* on Hewlett-Packard Deskjet 550C Printer HP 's high-quality. (10) sudo rm -rf /System/Library/Extensions/LexmarkUSBMerge.kext (7) sudo rm /Library/Application\ Support/Lexmark* (6) sudo rm /Library/Image\ Capture/TWAIN\ Data\ Sources/Lexmark* (4) sudo rm /Library/Printers/PPDs/Contents/Resources/Lexmark* (3) sudo rm -rf /Library/Printers/Lexmark (1) /Library/Printers/Lexmark/2007/Lexmark\ X5400\ Series/X5400\ Series\ Uninstaller.app This process takes about an hour and assumes you are comfortable using the terminal.
These steps assume you have already set up your printer/scanner to work with your computer and it has already worked in the past, and now it is saying "Application unexpectedly quit" every time you try to scan. I'm documenting the solution here - it worked for me. This is the second time in two month that I have to call Lexmark in order to get my scanner to work. I've just spent an hour on the phone with Lexmark because my mom wanted me to scan something on my Lexmark X5495 scanner. Made some slight changes, still works though.