When is this error coming up? Is it the installer, or is the install going fine, but starting ArchiCAD gives the error?
You mention that Acrobat is having the same problem, so does this mean the Acrobat installer is doing the same? if that is that case, then it seems like a problem with your system.
The ArchiCAD installer(not sure about Acrobat) uses Java, so perhaps an uninstall of whatever version of Java you currently have might help?
BTW. I have not come across any installation problems on my Vista 64 setup. That includes ArchiCAD 11 & 12, Adobe Master Collection, MS Office and many others.
My system has the following listed in Control Panel -> Programs and Features:
Java(TM) 6 Update 11
Java(TM) SE Runtime Environment 6
Josh Osborne - Central Innovation
HP Zbook Studio G4 - Windows 10 Pro, Intel i7 7820HQ, 32Gb RAM, Quadro M1200