Error: Class not registered, looking for object with CLSID : {AC9F2F90...}

Problem

When I install ASAP Utilities I constantly get the following error:
Microsoft Visual Basic
Class not registered.
Looking for object with CLSID:{AC9F2F90-E877-11CE-9F68-00AA00574A4F}

This keeps happening everytime I install the new version.

Cause

This problem may be caused by a missing or incorrect Microsoft Windows registry entry for the Dynamic Link Library Fm20.dll. The proper registration of this file is required when you work with UserForms and form controls in Microsoft Excel.

Answer

Basically, this is and Excel issue. Microsoft has published an article on its website that describes the problem and give a solution:
http://support.microsoft.com/kb/182500

Resolution

To resolve this problem, register Fm20.dll. You must have Regsvr32.exe to register Fm20.dll. If you do not have Regsvr32.exe you can download the file.
To Register Fm20.dll, follow these steps:
1. Use Microsoft Windows Explorer to locate the Fm20.dll file in the Windows\System folder or in the Winnt\system32 folder (under Microsoft Windows NT).
If the file is not present, copy it from the OS\System folder on the Microsoft Office 97 compact disc to the appropriate location.
2. Close all open programs.
3. Click Start on the Windows taskbar, click Run, and then type the following:
Regsvr32.exe fm20.dll
4. Click OK. The following message should appear:
DllRegisterServer in c:\windows\system\fm20.dll succeeded.
The file Fm20.dll should be registered correctly.

(in my case I could just use step 3 to fix the problem)