I am having a problem with installation. I bought Vegas Pro 21 Post  and I downloaded the program to my first computer and I believe it installed all programs including third part apps. Vegas Pro 21, Soundforge Pro and Acid Pro work fine I entered serial numbers and work fine. The other programs seems like they were installed but never asked for a serial number. When I go into Vegas I don’t see the third party  such as Boris FX Primatte, Magix Essential etc.  I tried to install individually using the program download website and I tried to install the app and it asked me to remove. It seems like in order to reinstall I would have to remove it first and install again. One of the apps did let me download I entered the serial number and it said serial number already used. I also installed the program on my other computer and that was installed just fine  All the third party apps were there when I click on FX  I can see them on the third party tab. So can I get some help on my first computer if the third party apps were installed why don’t they show up in vegas. Also I understand I can install vegas on two computers  Is that the same for the 3rd party apps?  Because when I tried to install one of the apps again on my first computer I got a message that the serial number was already used. Please let me know what to do with my first computer and how to find my third party apps in vegas