Making changes to an old file - save - error -43 ( file not found )

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Code 43 Error Message

The Code 43 error is one of several Device Manager error codes. The Code 43 error will almost always display in the following way:

"Windows has stopped this device because it has reported problems. (Code 43)"

Details on Device Manager error codes like Code 43 are available in the Device Status area in the device's properties

rror Code 43 Troubleshooting

1. Restart your computer if you haven't done so already.
   
   There is always the chance that the error Code 43 you're seeing on a device was caused by some temporary problem with the hardware. If so, a restart of your computer might fix the Code 43 error.
   
   Note: Some users have also reported that powering off their computer completely (not just a reset) and then turning it back on has corrected their Code 43 issue, especially if it exists on a USB device. In the case of a laptop, turn it off and remove the battery, wait a few minutes, and then put the battery back in and start the computer.
   
   
2. Did you install a device or make a change in Device Manager just before the Code 43 error appeared? If so, it's very possible that the change you made caused the Code 43 error.
   
   Undo the change if you can, restart your PC, and then check again for the Code 43 error.
   

Code 43 Error Message

The Code 43 error is one of several Device Manager error codes. The Code 43 error will almost always display in the following way:
"Windows has stopped this device because it has reported problems. (Code 43)"
Details on Device Manager error codes like Code 43 are available in the Device Status area in the device's properties: How To View a Device's Status in Device Manager.

Cause of the Code 43 Error

A Code 43 error is generated when Device Manager stops a hardware device because the hardware reported to Windows that it's having some kind of unspecified problem.
This extremely generic message could mean there's a true hardware issue or it could simply mean that there's a driver problem that Windows isn't seeing as such but that the hardware is being affected by.

Error Code 43 Troubleshooting

Restart your computer if you haven't done so already.

There is always the chance that the error Code 43 you're seeing on a device was caused by some temporary problem with the hardware. If so, a restart of your computer might fix the Code 43 error.

Note: Some users have also reported that powering off their computer completely (not just a reset) and then turning it back on has corrected their Code 43 issue, especially if it exists on a USB device. In the case of a laptop, turn it off and remove the battery, wait a few minutes, and then put the battery back in and start the computer.

Did you install a device or make a change in Device Manager just before the Code 43 error appeared? If so, it's very possible that the change you made caused the Code 43 error.

Undo the change if you can, restart your PC, and then check again for the Code 43 error.

Depending on the changes you made, some solutions might include:

• Remove or reconfigure the newly installed device.
• Roll back the driver to a version prior to your update.
• Use System Restore to undo recent Device Manager related changes.

Check under Usage and check that all the images are valid and updated. If these are correct, check whether the images are quark EPS files, if they are place the files in illustrator or photoshop (DO NOT OPEN THEM) and then save them in the appropriate format. Before you do this ensure that you have copies of these files .

Hope this helps.

try to save as

Error -43 is the common "File Not Found" error.  This can also mean a folder is not found. (A Google search for "macintosh error codes" returns a complete list from Apple at http://support.apple.com/kb/HT1618.)  I don't know why it would say this unless the files really don't exist.
Dragging an item to the Trash doesn't usually require a password unless you are not the owner of the item.  This can occur when copying items from another user's account, for example.
Try selecting all of the items that you want to delete, hold down the Option key, and choose Show Inspector from the File menu.  In the Sharing & Permissions area at the bottom of the Inspector window, verify that you have permission to delete the files.  If not, click the lock icon, type an administrator's username and password, then change the Privilege to Read & Write (you might have to use the + icon to add yourself to the list before changing anything).
Close the Inspector window and delete the items.  This should do the trick.

Just downsave the document and it would take care of the issue as well

someone has placed a read-only password on file