Have you tried repairing the windows?

An internal application error has occurred.

CAUSE
This issue may occur if one or more of the Jscript registry key settings are incorrect. This behavior may also occur if the Jscript.dll file is missing or damaged.

RESOLUTION
To resolve this issue, use the following methods in the order that they are presented.

Method 1: Reregister Jscript.dll and Vbscript.dll

1. Click Start, and then click Run.
2. In the Open box, type regsvr32 jscript.dll, and then click OK.
3. Click OK.
4. Click Start, and then click Run.
5. In the Open box, type regsvr32 vbscript.dll, and then click OK.
6. Click OK.

If either of the files do not register as expected, or if you receive an error message, the system file may be missing or damaged. To extract the missing file in Microsoft Windows XP, follow these steps:

1. Click Start, and then click Run.
2. In the Open box, type msconfig, and then click OK.
3. Click Expand File.
4. In the File to restore box, type the name of the file that you want to restore.
5. In the Restore from box, type the path of the Windows XP .cab file where you want to restore the file, or click Browse From to locate the Windows XP .cab file.

Note The Windows XP .cab files are stored in the I386 folder on the Windows XP CD.

6. In the Save file in box, type the path where you want to extract the new file, or click Browse To to locate the folder that you want.
7. Click Expand.
8. In the System Configuration Utility dialog box, click OK. If you are prompted to restart the computer, click Restart.

Open a dialog box that previously experienced the issue that is described in the "Symptoms" section of this article. If the issue recurs, go to the next method.

Method 2: Edit the registry
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. Locate the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb558}\In procServer32

The (Default) value data should contain the following value:

C:\WINDOWS\SYSTEM\JSCRIPT.DLL
If it does not, double-click Default, type C:\WINDOWS\SYSTEM\JSCRIPT.DLL in the Value data box, and then click OK.
4. The ThreadingModel value data should contain the following value:

Both
If it does not, double-click ThreadingModel, and then type Both in the Value data box.
5. Locate the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb558}\In procServer32
6. Repeat steps 3 and 4 to edit this key, and then go to step 7.
7. Locate the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb558}\In procServer32
8. Repeat steps 3 and 4 to edit this key, and then go to step 9.
9. Exit Registry Editor.