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You are right, but don't forget, this is a development test, that means beta or even alpha state. Official released apps usually don't use online installers. There are some exceptions but that don't depend on a single download location that will fail after an update.
This app is not bundled in the paf-file because of licensing issues. To use an online installer that downloads the original installer is the only way to provide this development test.
See release notes for changes.
Many thanks 
But if you ask me further development is futile.
Hi!
For the "Mp3tag Portable 2.65a Dev Test 1" it's written that the MD5 is "e454f354d...". Does it mean the MD5 of the direct downloaded file should be that value?
I am asking because I've downloaded three times the 869841-bytes file, and the three times the computed MD5 is "8e2c8c0e2e8b53...".
Am I missing something?
Dennis.
"e454f354d9b5d7ed1121e847584caa77" is the MD5 for "MP3tag Portable 2.65 Dev Test 1".
The MD5 for "MP3tag Portable 2.65a Dev Test 1" is "8e2c8c0e2e8b53805c86a9b9d24f2513".
@prapper: Could you update that?
Sorry about that
2.66 is out, but 2.65a is not unavailable anymore:-(
New Version 2.70
http://www.mp3tag.de/download.html
Hello,
please make Mp3tag an official portable app, so it is updated via the Portable Apps Platform.
Thank you!
OLLI
Talk to the publisher. They said no. Anyone creating a packaged version with it inside is doing so illegally.
Instructions: http://www.portablefreeware.com/index.php?id=1137
1. Download the installer and extract using 7-zip (must be v9.20 or above) to a folder of your choice
2. Delete $PLUGINSDIR (and $R0 if using the latest 7-zip beta)
3. Create a blank file in the same folder called mp3tag.cfg
4. Launch Mp3tag.exe
Version 2.71: http://www.mp3tag.de/en/download.html
In Data\data directory create folder with name sources
Enter and stand in
Run Mp3tag
Leave folder
Close mp3tag
Folder was removed and all data in lost
//In this directory you may store scripts to external db (e.g. tags, lyrics)
@prapper: Have you missed this or are there problems with doing it?
Hello,
I downloaded Mp3tagPortable_2.70_Dev_Test_1_online.paf.exe and selected in the PortableApps Platform to "Install a new App".
When I select the downloaded EXE then I get the error message:
The installer was unable to download Mp3Tag 2.70
What is wrong?
OLLI
Please read this thread. This problem has been discussed many times before. When an online installer expects a specific file that is replaced by an upated one at the download location, it is broken.
As long as prapper does not update his dev test, your only chance is to manually replace the app in the corresponding directory.
-edit-
your wish has been heard. 
prapper has updated the package.
Hello Depp,
I know what this error message means (I programmed applications in the past).
My intention of my posting was to get a fix for my problem.
And I was successful.
Thank you for updating your portable app, prapper!
OLLI
Then, why did you ask in the first place? 
The update notification has been posted 10 days before...
When do you plan to release MP3Tag v2.72 ?
Would you please refrain from bumping topics? It does not get things done any faster and is considered bad manners most of the time (btw. take a look at the guidelines).
If you are so eager to use the most recent version. just drop it in the App folder. It should work.
I've got some issues with this one. I have the official MP3tag installed in standalone mode from the regular installer (so basically already portable since it stores all preferences and settings in the program folder) and would have been glad to use it with a PAF installer....
however, it keeps losing my preferences and settings.... I am constantly finding that my tagpanel has reverted to the most basic settings, or that my added web tag sources are gone. So I will be reverting to the regular portable mode... too bad
That's interesting. It works as expected on my Win8.1 x64 machine. All my settings are preserved.
Do you have it installed in a special folder like ProgramFiles or comparable? Is your folder somehow restricted?
I had a look at the launcher settings and it looks alright. The settings files are just copied from the Data folder to the app's folder and back during runtime. Nothing special and the same way like many other portableapps.
Hello,
MP3Tag 2.76 is available.
Greetings
OLLI
This is very annoying
See this previous reply to one of your similar posts: https://portableapps.com/comment/225351#comment-225351
Hello Gord, hello prapper,
regarding this special reply Gord mentioned:
I wrote that version 2.72 is available and one month later I asked "When do you plan to release".
So this was a double posting and I agree that this could be seen as annoying.
But I thought it is helpful when I write that a new version is available and you (prapper) are glöad about this information.
Like I also posted new version numbers in the "Outdated Official Portable Applications" (https://portableapps.com/development/outdated)
I know that MP3Tag here is a "not officially supported" app, so I should not post new version numbers in the "Outdated Official Portable Applications".
Just tell me if I should stop posting new version numbers for MP3Tag here, I just thought this is helpful.
By the way:
Thank you prapper for releaseing the new version!
My wife and I we really appreciate that!
Greetings
OLLI
It's helpful to note that this is a dev test. The purpose of a dev test is to test out the portability features of the launcher to prep an app for eventual release. The purpose is not to always keep it up to date for end users. This app, for instance, will not be officially released as the publisher already said no due to the fact that they make a portable version available.
It might be better to release the launcher as an installer package without MP3Tag at all and with no live installer features. Just include directions so the end user can download the zip and manually keep it updated themselves. There's no reason to constantly update the dev test just because new versions of the app are available. Disconnecting it would allow users to download at will and update at will.
Or perhaps an online installer that won't verify the downloaded file's MD5 and can instead extract it's version number from the file it downloads, sort of similar to Calibre Portable's "Launcher Dev Test 1" release could be made?
Would be awesome to have something like this....
New Version 2.78:
http://www.mp3tag.de/download.html
http://www.mp3tag.de/en/download.html
Please note that informations are provided "as is". I am not related to the creator of the mp3tag portable apps installer.
If you are so in a hurry, instead of posting same posts again and again, you can try to make your own mp3tag installer until the real official beta is ready. To do so :
1/ Install the "PortableApps.com Installer" app in your PortableApps installation.
2/ Download the mp3tag 2.77 paf installer and SAVE IT (do not run)
3/ unpack it using 7zip (portable apps version or not) or any other fitting tool to (e.g.) C:\temp\Mp3tagPortable_2.77_Dev_Test_1_online.paf
4/ go to C:\temp\Mp3tagPortable_2.77_Dev_Test_1_online.paf\App\AppInfo sudbir
5/ Edit installer.ini and appinfo.ini to change all 2.77 to 2.78 (and especially the download url)
6/ Download the new mp3tag version from the official website (2.78) and calculate the md5 with any tool (i use cygwin/md5sum, but portable Apps RapidCRC should work too).
7/ Replace the md5 value in the "installer.ini" (should be 08189e2caa6cbc0cd1783ebabe4e5f93 for 2.78)
8/ Remove the C:\temp\Mp3tagPortable_2.77_Dev_Test_1_online.paf\App\$PLUGIN.DIR subdir
(i did not even try without deleting it because it looks so like a directory added by the installer generator)
9/ Use the "PortableApps.com Installer" and select C:\temp\Mp3tagPortable_2.77_Dev_Test_1_online.paf directory. it generate a new installer.
10/ use the new installer
Don't know if it is fully functionnal. But it apparently works correctly and install mp3tag 2.78.
PLEASE NOTE: TRY AT YOUR OWN RISKS .... This is just a one time post without further support.
Hello prapper,
thank you very very much for building 2.78
Greetings
OLLI
2.80b (2016-12-12)
NEW: added portable installation mode that stores settings in application directory and doesn't write information to the registry.
NEW: installer now asks for UAC admin elevation in case if its run from a non-admin user account.
CHG: changed installer and application to guess user language instead of asking user.
NEW: improved installer UI for high-resolution screens with high DPI settings (DPI awareness).
NEW: added version information to installer.
NEW: added size estimation to uninstaller.
NEW: added placeholders to access file path of current active playlist, i.e., %_playlist_filename%, %_playlist_filename_ext% and %_playlist_folderpath%.
FIX: renaming files via direct-editing in file list in %_filepath% column automatically removed trailing blanks.
Thank you for the effort of giving us this great program in Portable Format.
in case it was not noticed
Wow, up to 2.94 already.
Thanks for doing this and keeping it updated!!
It doesn't add the "sources" folder to " %appdata%\Mp3tag\data\" so Tag Sources don't appear. The folder has to be copied manually for the first time.
Mp3tag v3.12: https://www.mp3tag.de/download.html
_____________________________________________
1. Download the installer and extract using 7-zip (must be v9.20 or above) to a folder of your choice
2. Delete $PLUGINSDIR (and $R0 if using the latest 7-zip beta)
3. Create a blank file in the same folder called mp3tag.cfg
4. Launch Mp3tag.exe
_____________________________________________
3.12a (2022-02-13)
NEW: added %_cover_description% information field. (#55952)
CHG: added confirmation question on choosing converter, actions, or extended tags if the Tag Panel contains unsaved changes and auto-saving is not enabled. (#56065)
CHG: added confirmation question on editing via file list if the Tag Panel contains unsaved changes and auto-saving is not enabled. (#55633)
CHG: added error reporting to formatting string language. (#46638)
CHG: added internal mapping for MUSICBRAINZ_TRACKID field. (#44062)
CHG: added reporting of unsupported or corrupted file structure as error to 'Tag' column.
CHG: added support for multi-value MP4 fields written as multiple data atoms. (#56138)
CHG: added workaround for missing padding bytes for INFO subchunks in WAV and AIF. (#56080)
CHG: automatically removing control characters \n \r \t when renaming files and folders.
CHG: extended $validate() to replace control characters \n \r \t.
CHG: ensured that characters with accents or umlauts are using the Unicode Normalization Form C when querying Tag Sources.
CHG: updated list of default freedb servers to remove invalid servers.
FIX: apostroph character in export file path caused syntax error. (#55431)
FIX: configuration files with very long filenames produce runtime error when exporting settings.
FIX: copying or moving files resulted in inconsistent display of data if overwrite or keep both is used. (#56008)
FIX: taskbar icon was missing when starting from File Explorer shell extension under Windows 11 using Standard installation. (#54913, #55081, #55645)
https://community.mp3tag.de/t/mp3tag-development-build-status/455
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