Installation from max2011 to max2015

[gdombrow]

I'm trying to install forest pro 4.2.4 and railclone pro 2.2.3 onto max 2015. I currently have forest pro 3.3.1 and railclone pro 2.1.6 installed on max 2011 on the same machine. It asks me if I want to upgrade from my current versions. When I pick no, it cancels out the install and does not give me an option for max 2015. I want to install it onto max 2015. Do I need to uninstall the versions on max 2011 and then re-install the new versions onto max 2015?

[yuv]

Yes, it's not a good idea to have different versions of the plugins (even on separate Max installations), because there are several files shared in C:\Program Files\Itoo Software (as libraries, maps, etc.).

This is the reason because the setup program requires to uninstall older versions before upgrading. In this case i suggest to install both packages first for one Max version, and next for the other.