Here is the complete Z3TA+2 layout:
 
Arpeggios, Documentation, Resources folders with uninstall and reghelp files are located in C:\Program Files\Cakewalk\Z3TA+ 2
 
The dll and exe are in C:\Program Files\Cakewalk\Vstplugins\Z3TA+ 2
 
"MIDI Arpeggios", "MIDI Learn", Programs, Tunings and Wavetables folders are the relocatable user data (which I am guessing are defaulted to C:\ProgramData\Cakewalk\Z3TA+ 2)

This is a stretch, may want to check the permissions on the registry entry

One more idea, given the installer is integrated in the DVD version, I wonder if the dll dependencies are not getting updated. The download X1 Production Suite uses a stand alone installer for Z3TA+ 2 which checks for dependencies, the integrated installer may not. It may be the disk based installer does need X1 (at least the SONARPDR.exe) installed to cause the libs to get installed. See if Cakewalk will add the stand alone v2.1 installer to your store account, it might make a difference. The dependency walker referenced in http://forum.cakewalk.com/FindPost/2950211 may help nail down the problem.

scook
Here is the complete Z3TA+2 layout:
 
Arpeggios, Documentation, Resources folders with uninstall and reghelp files are located in C:\Program Files\Cakewalk\Z3TA+ 2
 
The dll and exe are in C:\Program Files\Cakewalk\Vstplugins\Z3TA+ 2
 
"MIDI Arpeggios", "MIDI Learn", Programs, Tunings and Wavetables folders are the relocatable user data (which I am guessing are defaulted to C:\ProgramData\Cakewalk\Z3TA+ 2)

This seems to be part of the problem - I don't have C:\ProgramData\Cakewalk\Z3TA+ 2 - I only have a folder there for Z3TA+. And what's also weird is that this folder only contains "MIDI arpeggios" and "Programs" folders - the "tunings" and "wavetables" folders are at C:\Program Files\Cakewalk\z3ta+
 

Nowhere do I have "tunings" or "wavetables" files for Z3TA+ 2. 
 
 

scook
I recall going through the version discussion before. The installer bit is new to me.
 
The files and locations are OK except where is the user data? I am guessing under C:\ProgramData. I relocated it on my machine. The user data contains the "MIDI Arpeggios", "MIDI Learn", Programs, Tunings and Wavetables directories. Here is my registry entry (serial number redacted).
 
[HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\z3ta+\2.0]
"Dll Path"="C:\\Program Files\\Cakewalk\\Vstplugins\\Z3TA+ 2"
"Version"="2.1"
"AppData Path"="C:\\Program Files\\Cakewalk\\Z3TA+ 2"
"UserData Path"="n:\\Cakewalk\\Z3TA+ 2\\Z3TA+ 2"
"User Name"="Steve Cook"
"Company Name"=""
"Serial Number"="CWZ3200..."
"Language"="English"
"Plug-in Name"="Z3TA+ 2"
"RegUrl"="http://www.cakewalk.com/register/default.asp?LID=3&PID=CWZ3200&SN="

 
Looking at my entry here, it seems that my UserData Path is C:\Cakewalk Content\Z3TA+ 2 - and it is here that my Tunings and Wavetables folders are. So I don't know why that UserData path is different in my installation, but surely the fact that the registry entry is pointing to that folder, and the relevant folders seem to be there, should mean that it wouldn't be an issue? 
 

I am guessing about ProgramData path, the "MIDI Arpeggios", "MIDI Learn", Programs, Tunings and Wavetables folders should be located in the directory specified in the "UserData Path" key in HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\z3ta+\2.0
 
It has been a while since I installed Z3TA+ 2 but IIRC the location of the user data path could be specified in the installer. It seems the Z3TA+ 2 installer included with the disk based version of X1 Production Suite has issues. I would petition Cakewalk to provide the free standing installer of Z3TA+2 v2.1.

sharke
 
Looking at my entry here, it seems that my UserData Path is C:\Cakewalk Content\Z3TA+ 2 - and it is here that my Tunings and Wavetables folders are. So I don't know why that UserData path is different in my installation, but surely the fact that the registry entry is pointing to that folder, and the relevant folders seem to be there, should mean that it wouldn't be an issue? 
 

I relocated my user data. It has been a while and I do not recall if it was an option during the installer or a manual process with regedit. Thank you, it seems like Cakewalk Content is the default location. As long as the registry resolves to a good location, it should not be an issue.

Yeah I just went with the default path the disc installer gave, which was the Cakewalk Content folder. Regardless, that shouldn't cause any problems as long as the registry entry is correct. 
 
Well I just bit the bullet and installed X1 and lo and behold, Z3TA+ 2 is now working. After all that, I'm going to hazard a guess that it wouldn't work until X1 had registered. Which means it is tied to X1 in the Production Suite. That's really lame. I might well contact Cakewalk and ask them to provide me with a standalone installer. 

This sound like a confirmation of #13 above. The interim solution only costs about 200MB and provides the added benefit of providing the last XP compatible version of SONAR on which to test plug-ins and projects.

Yeah I think you're right.