I would start the old task and remove the activex control of the structure manager.
I gave similar instructions on how to do this: here !
Take a look: regsvr32
- Close excel
- Click Start / Run / cmd
- A type
regsvr32 /u [path of old dll]/[filename]
For instance:
regsvr32 /u c:\windows\system32\file.dll
(You can add / q to hide all messages)
Good luck