[Fixed] Impossibility to change the language in PhotoFiltre Portable

My starting point is the following:

I have created a folder named "Languages" within the folder "PhotoFiltre". In the folder "Languages" I have pasted all the necessary language files (e.g. StudioDE.plg, StudioNL.plg, StudioES.plg, StudioIT.plg ...). Within the folder "PhotoFiltre" resides only the language file "StudioEN.plg". By parsing the environment variable %PAL:LanguageCustom% it will become for example DE. My aim is now, that I want to substitute the language file "StudioEN.plg" in the folder "PhotoFiltre" through the language file "StudioDE.plg" in the folder "Languages".

In a first step I wrote the following code in the file "PhotoFiltrePortable.ini":

[Language]
Base=%PortableApps.comLanguageCode%
CheckIfExists=%PAL:AppDir%\Photofiltre\Languages\Studio%PAL:LanguageCustom%.plg
DefaultIfNotExists=en

In a second step I create a file custom.nsh with the following content:

${SegmentFile}

${SegmentPrePrimary}
	ReadEnvStr $0 PAL:LanguageCustom
			${If} ${FileExists} "$EXEDIR\App\Photofiltre\Languages\Studio$0.plg"
				Delete $EXEDIR\App\Photofiltre\Studio*.plg
				CopyFiles /SILENT "$EXEDIR\App\Photofiltre\Languages\Studio$0.plg" "$EXEDIR\App\Photofiltre\"
				${EndIf}
!macroend

Unfortunately this did not work. Or is it necessary, that I must compile a new Launcher with the above file custom.nsh and the altered file "PhotoFiltrePortable.ini"? Or is the code of the file custom.nsh probably false?

How I read in the Language documentation in the section "Other ways", I need to compile this new code with the PortableApps.com Launcher Generator. Now all works fine. I forgot this last step.

Now are the invalid sentences, which I have mentioned in my original post, again correctly.

For everyone, who are interested at my version, is here the Downloadlink for the installer: PhotoFiltre Portable 7.0 Development Test 1

If I want to rename a file called "PhotoFiltre.htm" to "PhotoFiltre7.htm" with NSIS, can I do that with the following code?

Rename "$EXEDIR\App\Photofiltre\PhotoFiltre.htm" "$EXEDIR\App\Photofiltre\PhotoFiltre7.htm"

In some language files I detected 2 files called "PhotoFiltre.htm" and PhotoMasque.htm". The file "PhotoFiltre.htm" I renamed as "PhotoFiltre7.htm".
I created for every language a folder inside of the folder Languages. For example for german I named this folder "help-de". In this folder I pasted the 2 files "PhotoFiltre7.htm" and "PhotoMasque.htm".

My aim is now, that I want to substitute the language file "StudioEN.plg" in the folder "PhotoFiltre" through the appropriate language file (e.g. "StudioDE.plg" for german) in the folder "Languages". In addition should be replaced the two files "PhotoFiltre7.htm" and "PhotoMasque.htm" in the folder "PhotoFiltre" through the appropriate files in the folder "help-%PAL:LanguageCustom%" (e.g. "help-de" for german). To this end I have created a file "custom.nsh" with the following code:

${SegmentFile}

${SegmentPrePrimary}
	ReadEnvStr $0 PAL:LanguageCustom
		${If} ${FileExists} "$EXEDIR\App\PhotoFiltre\Languages\Studio$0.plg"
			Delete $EXEDIR\App\PhotoFiltre\Studio*.plg
			CopyFiles /SILENT "$EXEDIR\App\PhotoFiltre\Languages\Studio$0.plg" "$EXEDIR\App\PhotoFiltre\"
				${If} ${FileExists} "$EXEDIR\App\PhotoFiltre\Languages\help-$0\PhotoFiltre7.htm"
					Delete $EXEDIR\App\PhotoFiltre\PhotoFiltre7.htm
					CopyFiles /SILENT "$EXEDIR\App\PhotoFiltre\Languages\help-$0\PhotoFiltre7.htm" "$EXEDIR\App\PhotoFiltre\"
				${EndIf}
					${If} ${FileExists} "$EXEDIR\App\PhotoFiltre\Languages\help-$0\PhotoMasque.htm"
						Delete $EXEDIR\App\PhotoFiltre\PhotoMasque.htm
						CopyFiles /SILENT "$EXEDIR\App\PhotoFiltre\Languages\help-$0\PhotoMasque.htm" "$EXEDIR\App\PhotoFiltre\"
					${EndIf}
		${EndIf}
!macroend

Unfortunately, it does not work. Can someone give me a tip to solve this problem?

To fix the language issue, I have created a folder named "Languages" inside of the folder "PhotoFiltre". To preserve the folder "Languages" during an upgrade of the app, I have written the following code in the section [DirectoriesToPreserve] of the file "installer.ini":

PreserveDirectory2=App\PhotoFiltre\Languages

For a revised version is here the link for downloading: PhotoFiltre Portable 7.0 Development Test 3

Once again I have modified the code of the file "custom.nsh". Furthermore I have eliminated the folder "Languages" from the folder "PhotoFiltre". Instead I have pasted the folder "Languages" in the folder DefaultData. Accordingly the folder "Languages" will be preserved during an upgrade of the app.

Through these measures now automatic language switching works in the PortableApps.com Platform. If running without the platform, you can adjust the language after running and closing the application at least once by editing the file PhotoFiltrePortableSettings.ini within the PhotoFiltrePortable\Data\settings directory.

For a revised version is here the link for downloading: PhotoFiltre Portable 7.0 Development Test 4

I have now again revised the 3 files PhotoFiltrePortable.ini, installer.ini and custom.nsh. In particular I've inserted into the file PhotoFiltrePortable.ini a new section [LanguageStrings].

I've also added the folder Languages again into the program folder ​​PhotoFiltre (as in my version PhotoFiltre Portable 7.0 Development Test 3 ). For future updates the ​​folder Languages should always be a part of the program folder PhotoFiltre.

Here the link for downloading: PhotoFiltre Portable 7.0 Development Test 5