[Isis-users] ABCD v4.0.2 (Hotfix) Released – How to Update Safely

[Fred Hommersom]

Hello Roger
This is to congratulate with this hotfix. It worked with the special plugin.
Great succes for this new architecture.
Regards from a windy and wet Netherlands
Fred

"Roger C. Guilherme" <rogercguilherme at gmail.com> schreef op 25 oktober 2026 00:40:42 CEST:
>Dear colleagues,
>
>We are excited to announce the release of *ABCD v4.0.2*. This maintenance
>release is highly focused on correcting and stabilizing the *Update Manager*
>itself, addressing critical bottlenecks that affected users upgrading from
>versions 4.0.0 and 4.0.1.
>🛠️ What’s New in v4.0.2?
>
>The transition to the ABCD 4 architecture introduced a new batched AJAX
>processing system to the Update Manager, preventing screen freezes and
>server timeouts. However, versions 4.0.0 and 4.0.1 encountered three
>unintended side effects:
>
>   1.
>
>   *Extraction Infinite Loop:* The extraction phase would hang in an
>   infinite loop because the system failed to recognize the "success" string
>   returned by the server, a problem exacerbated if your interface was not set
>   to English.
>   2.
>
>   *Aborted config.php Update:* A premature shutdown hook falsely assumed
>   the update process was incomplete (logging config.php v4 NOT applied),
>   which aborted the new configuration merge.
>   3.
>
>   *Fatal Error ("Main config not found"):* During the replacement of the
>   main core directory (central/), the configuration file was temporarily
>   wiped from the disk and not restored in time for the next batch request,
>   triggering a fatal error.
>
>We have successfully resolved these issues in *v4.0.2*. Furthermore, we
>have introduced a *"Pre-Download Self-Update"* mechanism. Moving forward,
>the Update Manager will update itself before downloading and applying any
>core ABCD files, ensuring you always execute the safest and most recent
>update logic.
>📖 How to Update to ABCD 4.0.2
>
>The path to update depends entirely on your current ABCD version.
>
>*➡️ For Users Upgrading from v3.9.x:* You can proceed normally! The legacy
>Update Manager in the 3.9 series runs the installation in a single
>monolithic request, so you are not affected by the bugs mentioned above.
>You will transition smoothly into the v4 architecture.
>
>*➡️ For Users Currently on v4.0.0 or v4.0.1:* Because your current Update
>Manager contains the extraction loop bug, *you cannot update directly using
>the standard "Update" button*.
>
>However, thanks to ABCD 4's new modular architecture, you can apply this
>hotfix directly from your browser—no SSH or FTP access required!
>
>To ensure a smooth process, we have created a quick step-by-step video
>tutorial. *Please watch the tutorial before proceeding:* 🔗 *Watch the
>Update Tutorial Here <https://www.youtube.com/watch?v=DO-Tw23q0jM>*
>
>*Step-by-Step Instructions:*
>
>   1.
>
>   Go to *Configuration ABCD* -> *Plugins*.
>   2.
>
>   Locate the *"ABCD Update Manager Hotfix"* in the plugin list. *(Note:
>   The update notification is already visible at the bottom of the page, but
>   do not click it yet).*
>   3.
>
>   Click *Install*, wait a few seconds, and then click *Activate*.
>   4.
>
>   Click on *Settings* within the active plugin list (or click the link
>   inside the green notification bar at the top of the screen).
>   5.
>
>   Your Update Manager is now patched! You can safely navigate to the
>   Update Manager and proceed with the ABCD 4.0.2 update as usual.
>
>*(Please be patient during the final installation stage of the Update
>Manager, as the system takes a few moments to clear temporary files. Wait
>until the "Reload Page" button appears).*
>
>Once you have successfully updated to v4.0.2, the self-update system will
>be active, and the Hotfix plugin can be safely deactivated and removed.
>
>
>Best regards,
>
>
>*Roger C. Guilherme*
>Bibliotecário CRB10/1860
>Fone: +55 51 992380849
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