TeamREPENTOGON / TeamREPENTOGON/Launcher

[LINUX MINT] [ERROR] Unable to force REPENTOGON update [ERROR] Failed to launch game: The REPENTOGON installation is broken!

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C++
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Description

Im trying to set up repentogon launcher while on linux mint but I keep running into this problem.

[ERROR] [2025-12-29 12:52:46] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2025-12-29 12:52:46] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[INFO] [2025-12-29 12:52:46] Installation::Validate: validating Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe
[INFO] [2025-12-29 12:52:46] InstallationData::Validate: validated executable Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe (version 'v1.9.7.15.J374') (repentogon = 0)
[INFO] [2025-12-29 12:52:46] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[INFO] [2025-12-29 12:52:46] Installing Repentogon: wizard was skipped and Isaac installation contains no valid Repentogon installation
[ERROR] [2025-12-29 12:52:46] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2025-12-29 12:52:47] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2025-12-29 12:52:47] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2025-12-29 12:52:47] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2025-12-29 12:52:50] Failed to launch game: The REPENTOGON installation is broken! (3)
[ERROR] [2025-12-29 12:53:05] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2025-12-29 12:53:05] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2025-12-29 12:53:07] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2025-12-29 12:53:07] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2025-12-29 12:53:09] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2025-12-29 12:53:20] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2025-12-29 12:53:22] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2025-12-29 12:53:31] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2026-01-04 12:37:27] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:37:27] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[INFO] [2026-01-04 12:37:27] Installation::Validate: validating Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe
[INFO] [2026-01-04 12:37:27] InstallationData::Validate: validated executable Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe (version 'v1.9.7.15.J374') (repentogon = 0)
[INFO] [2026-01-04 12:37:27] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[INFO] [2026-01-04 12:37:27] Installing Repentogon: wizard was skipped and Isaac installation contains no valid Repentogon installation
[ERROR] [2026-01-04 12:37:28] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:37:28] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:37:28] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:37:28] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:37:31] Failed to launch game: The REPENTOGON installation is broken! (3)
[ERROR] [2026-01-04 12:40:54] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:40:54] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[INFO] [2026-01-04 12:40:54] Installation::Validate: validating Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe
[INFO] [2026-01-04 12:40:54] InstallationData::Validate: validated executable Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe (version 'v1.9.7.15.J374') (repentogon = 0)
[INFO] [2026-01-04 12:40:54] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[INFO] [2026-01-04 12:40:54] Installing Repentogon: wizard was skipped and Isaac installation contains no valid Repentogon installation
[ERROR] [2026-01-04 12:40:54] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:40:54] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:40:54] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:40:55] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:40:57] Failed to launch game: The REPENTOGON installation is broken! (3)
[ERROR] [2026-01-04 12:41:20] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:41:20] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:44:01] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:44:01] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[INFO] [2026-01-04 12:44:01] Installation::Validate: validating Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe
[INFO] [2026-01-04 12:44:01] InstallationData::Validate: validated executable Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe (version 'v1.9.7.15.J374') (repentogon = 0)
[INFO] [2026-01-04 12:44:01] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[INFO] [2026-01-04 12:44:01] Installing Repentogon: wizard was skipped and Isaac installation contains no valid Repentogon installation
[ERROR] [2026-01-04 12:44:01] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:44:01] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:44:01] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:44:01] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist
[ERROR] [2026-01-04 12:44:04] Failed to launch game: The REPENTOGON installation is broken! (3)
[ERROR] [2026-01-04 12:46:09] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:46:09] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[FATAL] [2026-01-04 12:46:24] The launcher was placed at an invalid location @ Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon!
[ERROR] [2026-01-04 12:47:25] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:47:25] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[INFO] [2026-01-04 12:47:25] Installation::Validate: validating Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe
[INFO] [2026-01-04 12:47:25] InstallationData::Validate: validated executable Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe (version 'v1.9.7.15.J374') (repentogon = 0)
[INFO] [2026-01-04 12:47:25] Installing Repentogon: wizard was skipped and Isaac installation contains no valid Repentogon installation
[ERROR] [2026-01-04 12:47:25] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2026-01-04 12:47:26] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2026-01-04 12:47:29] Failed to launch game: The REPENTOGON installation is broken! (3)
[ERROR] [2026-01-04 12:50:24] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/Launcher/releases: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:50:25] Successfully opened and parsed launcher configuration file C:\users\steamuser\Documents\My Games\repentogon_launcher.ini
[INFO] [2026-01-04 12:50:25] Installation::Validate: validating Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe
[INFO] [2026-01-04 12:50:25] InstallationData::Validate: validated executable Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\isaac-ng.exe (version 'v1.9.7.15.J374') (repentogon = 0)
[INFO] [2026-01-04 12:50:25] Installing Repentogon: wizard was skipped and Isaac installation contains no valid Repentogon installation
[ERROR] [2026-01-04 12:50:25] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2026-01-04 12:50:25] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[ERROR] [2026-01-04 12:50:28] Failed to launch game: The REPENTOGON installation is broken! (3)
[ERROR] [2026-01-04 12:50:32] DownloadAsString: https://api.github.com/repos/TeamREPENTOGON/REPENTOGON/releases/latest: error while performing HTTP request: cURL error: SSL connect error
[INFO] [2026-01-04 12:50:32] RepentogonInstallation::Validate: Z:\home\max\Games\steam-games\steamapps\common\The Binding of Isaac Rebirth\Repentogon/ does not exist

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the launcher on Linux Mint using the reported logs, focusing on the DownloadAsString requests to GitHub and the Repentogon installation validation. Determine why the SSL connection fails and why the launcher is reported at an invalid location; done means the launcher can retrieve releases, install Repentogon, and launch the game successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, linux
Domain
desktop, networking, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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