@PhotoMaster:
Have you reinstalled GMIC since you've updated Gimp?

Hot damn, a survey in a GIMP plugin. I had to do it. Would have liked a few more options on some questions, but that's always my problem with surveys. Anyway, it worked perfectly, and was fun.

The G'Mic install that I have is only an unzip and extract. I re-did it but still have the same error code.

unzip and put the attached .dll in the same /.gimp-2.8/plug-ins folder where gmic is

who knows.....

I think I may have found part of the problem. The link within G'Mic, to download the 64 bit Windows version is actually giving me version 1.6.0.3 for Windows 32 bit.

I must correct my last post. I was still hitting my old G'Mic from Gimp 2.6 and I got rid of it. Still no G'Mic buy still trying.

I got it!! I had to replace the file libstdc++-6.dll that came with Gimp with the one that came with G'Mic. It also got rid of other errors that were popping up! Awesome!!

EDIT: I was able to submit my survey too!!

Good news PhotoMaster !
And well done

I think I'm having the same dll issue as PhotoMaster.

I attempted to install the G'MIC plugin for GIMP, nothing from G'MIC shows up in my filter list. I went to the newly installed G'MIC directory (GIMP 2/plugins) and executed gmic_gimp.exe. I got a pop-up error message saying libgdk-win32-2.0-0.dll is missing. I found that file in the GIMP/bin directory and copied it to my Windows/system32 directory.

That did not add anything to my filter list so I again tried to execute gmic_gimp.exe. This time I got a message saying libcairo-2.dll is missing. That file does not exist in my GIMP or G'MIC installations, nor in my windows system directories.

Am I doing something wrong in the installation process? I simply downloaded and executed the file gmic_gimp_win64.exe (the plugin for GIMP on 64 bit Windows systems) from Sourceforge. I think the .exe file downloaded and extracted files from a .tar.gz file.

I told the installer to create a plug-ins directory in my GIMP directory which it did. After trying to install G'MIC, the plug-ins directory contains 14 .dll files, the file gmic_gimp.exe, and an uninstall directory. Should there be more?

I have 64 bit Windows 7.

You can probably tell I don't know what I'm doing. Any suggestions?

I don't have particular suggestions, but you shouldn't try to copy the .dll files that appear in the error messages when running 'gmic_gimp.exe' directly, outside GIMP.
Because, most of the .dll you'll get are just .dll shipped with GIMP that are indeed found by the plug-in when it's run inside GIMP.
Maybe there is only one missing, or one with a different version only.
Did you try the solution of PhotoMaster with the libstdc++-6.dll ?

Thank you David, I did it and sent it without problems.

Yes, same error messages about missing DLL's. No G'MIC added to filters.

I must not be holding my mouth right.

Search for duplicate DLL's using both Gimp global and user folders.

I had a similar problem once. I put all of the files from GMIC in a separate folder under plugins. I then, in GIMP, go to preferences and add that new folder to the plugins folder. I also found that I had to move that folder to the top of the list.

I think, if GMIC doesn't find the correct version of a .dll it give a "not found" error. It also seems to go through the through the folders from top to bottom in the plugin folder list. So if another program is using a different version of the .dll before it gets down the list, you get an error.

The G'Mic filter is one of the very last filters listed in my filter list.

My GMIC folder is in the GIMP/plugins folder. I added that folder to the plugins list in preferences and moved it to the top of the list. Restarted my computer. GMIC is still not in my filter list.

Has anyone seen the new version of GMIC work on a Windows 7 64 bit operating system?

Edit: I have GIMP 2.8.14 if that matters.

Every DLL I searched for has at least one duplicate. I've tried about 10. Did you go through the whole list and delete all the duplicates?

In my installation, most but not all, of the DLLs that GMIC is looking for are in the GIMP directories (mostly bin or 32/bin). I don't know if GMIC installed some of them or if they are all from GIMP. In any case, deleting the duplicates would be a huge chore, and I don't know if that would cause some other part of GIMP to stop working.

You should only have one of each DLL between Gimp global and user folders. For example if you find 'foo.dll' in both Gimp folders rename one, 'foo.dll.old' (to be consistent and cautious rename the user [.gimp-2.8] folder duplicate). Restart Gimp, if all goes well remove 'foo.dll.old'. If you still have issues check Windows system for duplicates, if you find any keep the system DLL.

I'm running Gimp 2.8.14 on Windows 7 64bit with G'Mic 1.6.2.0 (pre-release #032015) and I got it working. Because of permissions on my machine I had to unzip the files into a folder on my desktop and then move them to
C:\Program Files\Gimp 2\lib\gimp\2.0\plug-ins
When it encountered duplicate file names, I had it overwrite the old files. It overwrote about 10 files if I remember correctly.

I am also running on win7 64. only difference, I am using samj's portable compile.