Is this the correct version of C++ runtime?
Yes, that's what we use for Designer
I don't understand why no C++ on the machines???
It could have been your anti-virus software. When Designer installs, it recommends closing your anti-virus (sad, but true). I have no problems with my anti-virus, but there are some out there that do block install of system DLLs like the MFC DLLs, or sometimes you must install as administrator (see previous comment on that). So it could be that you just needed to run the install "as administrator" or with your anti-virus software disabled (note that if you did that, I would definitely take myself off any network before disabling my anti-virus s/w and installing Designer or any software - there's something strange about installation that recommends that, but it's the nature of the beast).
Question, can I use Designer 1.1 and 1.2 to edit my program without conflict? I usually want to run the new version for awhile before discontinuing the previous version.
You can run either program, just not at the same time (there is a check in the software for this). Regarding the project files themselves, they are compatible. However, this is not always the case as we go forward (e.g. the next version may have a different file format or Technology Version not supported by 1.2). Hence, we recommend that you don't purposefully switch back and forth across versions with the same project file.
For example, 1.2 supports the Terminator DM1 CPUs, but 1.1 has no clue what those are. It's probably best to keep your 1.1 projects in your 1.1 Projects folder and your 1.2 projects in your 1.2 Projects folder. 1.2 can open 1.1 Projects and 1.1 can open most 1.2 projects, but you don't want to get in the habit of intermixing them. So copy your 1.1 projects to your 1.2 folder, and use 1.2 on those and save those using 1.2. We definitely are backward compatible (i.e. newer software versions can open older files but then save in newer project file format), but not necessarily the other way around (older software versions may not be able to open newer versioned project files).