Actually, I found the solution for me.

In the sqlserversolutions.blogspot.mx website

The fifth recommendaton do the trick.

5. Find MsDtsSrvr.ini file at drive:\Program Files\Microsoft SQL Server\90\DTS\Binn (for 2008 find in 100\DTS\bin folder) and...

I am having the same issue. I already try the same things that you already try and same as you no luck. Do you find the solution?

Thanks,