Tried an install of 64 bit 3.98z and latest 3.99a Zeus on a 64 bit Win 8.1 machine and in both cases the zCVS directory and the zcvs.dll file are missing.
I take it by this you're still using CSV. I'd say you're probably the last Zeus user still using CVS
The cvs support was removed from the installer when the Zeus 64 bit version was first created.
The main reason it was dropped from the installer was the latest installers were changed to run without local admin rights.
However, to install the zcvs.dll requires local admin rights, as changes to the local machine registry are required.
Some of the other reason why it was dropped:
a. It reduced the size of the installer.
b. The demand for CVS was assumed to be extremely low.
c. It meant less testing was needed for the now two variants of Zeus.
Now that zcvs.dll is still found in the Zeus Lite package found here:
https://www.zeusedit.com/lite/download.html
And that installer lives side by size with other versions of Zeus as it installs into this folder:
C:\Users\<user id>\AppData\Local\Programs\Zeus Lite\zCVS\
However, that installer also runs in local mode so to install the zCVS.dll will requires editing the registry key. The changes needed are described here:
C:\Users\<user id>\AppData\Local\Programs\Zeus Lite\zCVS\cvsdoc.html
I have an older VM with a 32 bit version of Zeus installed and I see a zCVS directory there. Is cvs support only for 32 bit installs?
As a test I tried loading the zSCV 32 bit dll in the Zeus 64 bit and it failed to load.
That same test worked fine for the Zeus 32 bit.
So I think it is safe to say it will only work that only Zeus 32 bit version.
Cheers Jussi