Hi,
I’m using 4R7.
the problem is the “pre-process Current” and “pre-process All” of decimation master do not start.
it show up this message when press “decimate Current” or “Decimate All”
please help!
Attachments
Windows or Mac? It is a tool(or tools) it should work on?
Windows 7.
same result, one object or many.
there is no problem in 4r6 or previous versions.
i don’t know it’s whether related problem:
it’s missing Plug-in folders after i installed 4r7
this kind of message appear for each Plug-ins.
but, i created these folder to fix it.
it’s normal in 4r7?
One big thing I see is you’re using D instead of C drive? Folder placement is crucial, it wanted to install to C Drive I’ll bet 
i uninstall and install 4r7 again to C drive, it’s same problem…
It’s probably a permissions issue. 4R6 probably has access permissions to its folders and 4R7 probably doesn’t.
can I make these permissions?
It looks like it’s installing the shared data in the wrong folder (which has limited permissions)
Zbrush should have two folders:
The main install folder should be (or similar):
C:\Program Files (x86)\Pixologic\Zbrush 4R7\
This is where the Zbrush program is located and where startup files, brushes, alphas, etc. are stored. Even the Plug-ins are stored in this location (C:\Program Files (x86)\Pixologic\Zbrush 4R7\ZStartup\ZPlugs64\ (or just Zplugs for the 32-bit version).
Usually folders and files in the Program Files directory are set to Read-only permissions.
The secondary folder installed for Zbrush should be (or similar)
Documents\ZBrushData
This is where Zbrush stores preferences & configuration files, short-cut keys, etc. It’s also where it writes QuickSave files and where it puts Plug-in Data. So for example when running Decimation Master it writes (saves) files to Documents\ZBrushData\ZPluginData\DecimationMasterData
It looks like 4R7 is set to putting your ZBrushData folder in the C:\Program Files (x86)\ZBrush 4R7\ and that directory is probably set to Read Only. This is why you can’t run Decimation Master. It has to be able to write a file to that location but its permission is denied as it’s set to Read Only.
4R6 is probably using the correct ZBrushData location (which by default should be Documents\ZBrushData) and that folder has write permission.
I’ll bet if you did a file/folder search for ZBrushData you’ll find two different locations. You also might be changing the directory location of the ZbrushData folder during the install. Try uninstalling 4R7 (but keep 4R6) and then re-install, but make sure you run the installer with ‘Run as Administrator’. Also don’t just click okay on everything but see where the actual install directories are being setup during the install process. You probably changed these from the default and so it’s running into permission issues in the ProgramFiles directory.
There is a way to change permissions but I recommend doing the default folder setup. 4R6 and 4R7 both use the same ZBrushData folder. Which means it’s better to keep it separate from the ZBrush 4R7 install folder. Because multiple Zbrush versions uses the same shared data files (and most likely to in future releases) it makes it easier and quicker to update.
Thanks MentalFrog, your direction is right.
Finally I solve the problem.
The fact is 4r6 and 4r7 want to save files to :
C:\Users\Public\Documents\
“Documents” should be a folder,
I don’t know why,
“Documents” in my system is just a file without any file extension.
This make 4r6 and 4r7 cannot create the file to here, but
4r6 can run fine without this location’s files.
4r7 cannot.