Your Chromium 42 Portable should look like this.
This recipe is not for noobs.

Ingredients:

ChromiumPortable_42.0.2298.0.paf.exe
http://crportable.sourceforge.net/

Flash Plugins, both Adobe and Pepper

Flash_PPAPI_Portable_17.0.0.188_32-64_Plugin.exe
Flash_NPAPI_Portable_17.0.0.188_32-64_Plugin.exe
http://portableapptrash.blogspot.com/2015/04/flash-plugins.html or http://portablewares.blogspot.com/2015/05/adobe-and-pepper-flash-browser-plugin.html

NOTE: there's two flash plugins. The good old Adobe (uses NPAPI) and the newer "Pepper" (uses PPAI), made by Google.

(Pepper Flash)

Copy

pepflashplayer32.dll
pepflashplayer64.dll

to ChromiumPortable directory.

Create

chromium32.bat
start ChromiumPortable.exe --ppapi-flash-path="%CD%\pepflashplayer32.dll" --ppapi-flash-version="99.0.0.0"
exit

chromium62.bat
start ChromiumPortable.exe --ppapi-flash-path="%CD%\pepflashplayer64.dll" --ppapi-flash-version="99.0.0.0"
exit

(Adobe Flash)

Copy

NPSWF32.dll

to ChromiumPortable\Data\PLUGINS directory.

In Chromium go to

chrome://flags/

Check

"Enable NPAPI"

Check everything is OK:

chrome://flash/
chrome://plugins/ (you can disable "AdobeAAMDetect" and "Chromoting Viewer")

Hide ads:

ChromiumPortable.ini
DisableSplashScreen=TRUE

If you are using 64 bit Windows use chromium64.bat and if you are using 32 bit Windows use chromium32.bat.

Also see:
http://insurgencymod.blogspot.com/2015/05/rant-google-chrome-portable-is-not.html
http://insurgencymod.blogspot.it/2015/05/rant-google-deleted-my-gmail-address.html
http://insurgencymod.blogspot.it/2015/05/protip-do-not-update-to-chrome-42.html
and
http://insurgencymod.blogspot.com/2013/03/pro-tip-flash-player-for-iron-portable.html

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