Why is the "ox00000000" memory referenced by the "ox5003eaed" command displayed when the file is opened at VC ++ 6.0. The memory cannot be "read"

In fact, the most correct method should be like this (I don't know what is going on in management, and the answers recommended by netizens cannot solve the problem ):
"0x00000000" memory referenced by the "0x5003eaed command. The memory cannot be
"Read ". To terminate Program , Click "OK ". To debug the program, click "cancel "."
. Start the open file dialog box and use the keyboard shortcut in Visual C ++ or the following error will occur from the File menu:
Access conflict (0xc0000005) is in 0x5003eaed devshl. dll.
Devshl. dll is referenced in 0x0000000 memory. The memory cannot be read.
The same error occurs when you select Add to project from the project menu and click File.
Filetool.exe is an example used to replace open and add to project menu items and use the development tool studio Object Model in Visual C ++.
The following files can be downloaded from the Microsoft download center:

Http://download.microsoft.com/download/vc60ent/s1/6.0/w9xnt4/en-us/filetool.exe
Self-extracting filetool.exe
First install the external program:
1. Run visual c ++ 6.0, file -- open the workspace, open the DSW workspace file in the decompressed filetool, compile the file, and generate the filetool. dll file in the dbug folder.
2. in Visual C ++, click customization in the tool menu.
3. Click the additional items and macro files tab in the Custom dialog box.
4. Click the Browse button and find the filetool. dll file generated in step 1.
5. Click OK to save the settings.
Now we can officially start:
1. Click custom from the visual C ++ tool menu.
2. Click the keyboard tab in the Custom dialog box.
3. Select a file from the category box.
4. Select fileopen in the Command window.
5. In the current shortcut window, select Ctrl + O and click Delete.
6. Select a project from the category box.
7. Select insertfilesintoproject in the Command window. If there is a shortcut associated with it, follow Step 1 to delete it
Division. No shortcut keys by default.
8. Select add-ins from the category box.
9. The command window displays two external program commands: addfiletoproject and openfile.
10. Select openfile, place the cursor in the new shortcut box, press the shortcut key or key combination you want, and click Allocate. (Note that the shortcut key you entered must not be occupied. If UN *** is displayed, It is not occupied .)
11. Repeat the preceding steps with other commands to allocate the addfiletoproject. The assigned shortcut keys are displayed in the current item window.
However, the subsequent steps may be omitted, depending on your situation and version.
1. Click custom from the visual C ++ tool menu.
2. Click the File menu, drag the open command of the closed file pop-up menu, and delete it.
3. Click the project menu, click Add project, and drag to close the file command in the pop-up window and delete it.
4. Select the command tab in the Custom dialog box.
5. Select an external program from the category list box.
6. Drag the openfile command to the File menu and place it in the new directory as expected.
7. Drag the "addfiletoproject" command on the project menu to add a project item and place it in the new project as expected.
When the menu has been modified, there is no need to make The addin toolbar visible.
Solve this problem.