Quote:i have portable GIMP ,
That is the first problem,
Are you using as a truly portable Gimp and using on different computers?
or
A matter of convenience and using on a single computer as an alternative to the regular installation?
If the second, then you might just get it working, maybe..perhaps..slim-chance.
Quote:i did all steps. " i added CYAN to GIMP plugins , user folder( may i did not need that but i did it)
No. Cyan.exe is not a Gimp plugin
Do not use it as a plugin. Take it out of the plugins folder.
Explanation: When you run Cyan.exe it looks for the Gimp installation and installs a plugin cyan.py in the plugins folder. That plugin is customised to your installation (1) and makes an entry in the Gimp toolbar (2)
Best guess, using a portable Gimp that location is never found, no plugin, will not work in Gimp.
Quote:. and customized it like you said in the video. " gimp loading window when it gets to CYAN.exe , cyan window appears and must close it so gimp can continue loading then nothing happens , and no CYAN plugin in menus or gimp plugins browser .
Watch the video again. For any others the sequence is,
1. Put Cyan.exe somewhere accessible
2. Run it once to: a) set up the profiles b) let it write that plugin cyan.py to your Gimp plugins folder.
3. Access the Cyan application via the cyan entry in the Gimp toolbar.
Quote:what should i do ?
1. Use a regular Gimp 2.10 installation
2. The slim-chance option: the cyan.py from Windows is attached. Once you have moved Cyan.exe somewhere sensible, edit line 13 for that location. Note: it will not work without that edit. Put the edited cyan.py in your portable Gimp plugins folder.
3. Cyan.exe works as a stand-alone application. Open your CMYK image and convert to RGB for Gimp. The same in reverse, save your RGB image and convert to CMYK.
4. Other applications, CMYK images should really be entirely created in that colour space. Use Krita.
edit: CMYK support in Gimp is still some time away according to the road-map https://wiki.gimp.org/wiki/Roadmap Sometime after a 3.2 release.