When you try to open Adobe Fireworks CS5 on Mac OS, the application doesn't launch and displays the following error message:

"Fireworks cannot run. A parameter was incorrect."


Solution 1: Verify user folder permissions.

  1. Using the Finder, navigate to the /Users/<username>/Library/Preferences.
  2. Control-click Adobe Fireworks CS5 and choose Get Info.
  3. In the Sharing & Permissions section, click the Details option to show owner and group options.
  4. Click the lock icon in the lower right corner. Type in your administrator username and password as prompted.
  5. Give Read & Write permissions to your username and admin.
  6. Click the Gear icon and choose Apply To Enclosed Item.
  7. Close the Get Info window.
  8. Repeat the process on the remaining paths.
  9. Launch Fireworks.

Solution 2: Re-create the Fireworks preferences files.

For instructions and some additional information, see Restore preferences | Fireworks CS5.

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