Hi Alvaro,
probably you need to register the dll see please 2155212 - Error "Cannot create ActiveX component" happens when execute any packages in BPC MS 10.0 systemto follow the rules.
Please remember to search also in sap notes not only inside the forum and remember to close the thread when solved, eventually explaining your solution if you found yourself assigning assingning the "correct answer" this will help other user with same issue to find quickly how to solve.
Please avoid also to reopen old thread asking for a solution, if they didn't close correctly the thread explaining what was the solution 2 or 3 years ago they won't answer now almost surely to providethe solutionthat they probablyhave also forgotten.
Regards
Roberto