I always used GOG Downloader for getting offline installers, but since the tool was ditched by GOG I had to find another way of easily getting them. So, I installed the DownThemAll plugin for Firefox as other members have suggested in other threads.

I like the nice trick that you can select all installer parts and then choose to save as a batch. But I'm encountering a problem with file names and I would be glad if anyone could offer any help.

Let's say I download a game consisting of 3 installer parts: 1 .exe and 2 .bins as usual.
When I do the above process with DownThemAll, the resulting file names are something like:
game_name.exe
en1installer1 (no suffix)
en1installer2 (no suffix)

Trying to run the installer fails because it cannot detect the 2 .bin files.

If I manually rename these files to:
game_name-1.bin
game_name-2.bin
the installer seems to initialize fine but I'm still not sure if this is the correct way to handle the situation.

Is there something I'm missing here?

Problem: Microsoft think they know that you do not need to know everything so the remove the endings/suffixes of files.... IDIOTS!

Go into Windows' settings and make sure Windows shows the file endings.

Hey there, thanks for replying but that's not the problem (I always have file extensions visible).

The problem seems to be that the plugin somehow cannot resolve the "true" names of the bin files, so instead of saving "game_name-1.bin" it saves "en1installer1" (which seems to be auto-assumed from the link on GOG's game download page).

Ah, now it makes sense. Unfortunately the Downthemall does not make sense then :-(

I havent seen this issue before - but then its been a long time since ive used firefox.

As I see theres a new version (finally) it may be an issue in the extension itself - I'm using the old version with palemoon.

This post might help you out.

Why can't you use https://github.com/Kalanyr/gogrepoc like everybody else? It's simple and it downloads everything for you, with or without extras.

Just make a batch file with couple of lines and have it run by windows scheduler to update the local backup each week or so.

What if a game is waiting for you if you do it? Would that be enough incentive?

I've wanted to do it myself but I'm still trying to master the language and I've never done GUI...

Thank you, you are very kind! Although, I could not accept that. If I ever actually did it I would just offer it to the community here in case anyone finds it helpful. It would be very barebones (very basic functionality), just enough to avoid the command line fiddling.

I thought about creating it in C++ using Qt for the GUI, both of which I am experienced in. It would just invoke gogrepo in a background process and capture / parse the console output to update the interface.

Still, until I actually find the time to do it, I am looking for alternatives to download the installers easily :)

Bumping this thread up again to offer some update in case anyone is interested.

The situation with Firefox and DownThemAll still exists in Firefox 75.0, so I decided to try another browser.

I installed the latest Edge (the new Chromium-based one), enabled extensions from other stores and installed DownThemAll from the Chrome store. And it works like a charm, the filenames are the correct ones upon starting the downloads.

So my conclusion is that something is wrong with the Firefox version (either DownThemAll or the browser itself).