Multi-part installers cannot be extracted

[dee-fox]

Cannot extract Heroes of Might and Magic III: Complete from GOG with a cryptic "Failed" error.

[IvanSavenko]

I have identical issue. Android 14. Current version of app from Google Play.
Inno Setup Extractor fails to extract this installer.

After I select installer, app fetches preview icon from gog.com, but on "Step 3: Ready to Extract" app immediately fails and shows "Failed" message.

On my Linux install I have "innoextract 1.8" that is capable of extracting same installer, so does not seems to be upstream issue.

Note that this installer consists from two parts:
setup_heroes_of_might_and_magic_3_complete_4.0_(28740).exe (822,520 bytes)
setup_heroes_of_might_and_magic_3_complete_4.0_(28740)-1.bin (1,005,040,617 bytes)

Perhaps app is unable to handle multi-part installers?

If there is any way I can help with solving this issue please let me know.

[alanwoolley]

Thanks for the report. Your conclusion is likely correct @IvanSavenko, as there's no explicit support for multi-part installers yet, due to the way that the file is opened from the Android storage.