Introduction #
We are pleased to announce the release of Siril 1.4.0 RC2 (Release Candidate 2), twelve days after RC1 released in early November . This second release candidate fixes several critical bugs identified by the community and very likely represents the final step before the stable release of Siril 1.4.0.
This RC2 focuses exclusively on bug fixes, with particular attention paid to stability issues on different platforms, especially on macOS and Windows.
Major fixes in RC2 #
Stability and memory management #
- Fixed crash on Intel macOS due to a bad pragma simd clause (#1856)
- Attempted fix for memory allocation issue during stacking on Windows (#1858, #1866)
- Fixed shared memory leak in
set_seq_frame_pixeldata()
Stacking and sequence processing #
- Fixed rejection stacking for sequences in 16b (#1858)
- Fixed writing registration information for the reference image with global registration (#1849)
Pixelmath and FITS metadata #
- Fixed regression in Pixelmath where FITS header keywords were not properly copied from the source image to the result (#1851)
Other fixes #
- Fixed typo in platesolve tooltip
- Fixed error in meson configuration
- Updated log messages to avoid double newlines
- Increased sirilpy timeouts
Important: macOS support evolution #
Support for macOS < 13 Ventura seriously compromised #
Starting with this version, support for macOS systems prior to version 13 Ventura is seriously compromised, even though it is still technically possible to use Siril on these versions. This is not due to Siril itself but because of the increasing reliance of scripts on third-party software such as Qt6, which have their own schedules for discontinuing support for ancient OS versions, outside our control.
Warning: Many Python scripts are likely to encounter problems on macOS versions below 13. We strongly recommend Mac users to update their operating system to macOS 13 or higher for an optimal experience.
Considering dropping Intel Mac support #
We are also considering, in the more or less near future, dropping support for Intel processors on macOS. Support is expected to continue throughout the 1.4.x stable series but is unlikely to extend to 1.6.x. This decision would allow us to focus our development and optimization efforts on modern architectures. Affected users will of course be informed well in advance if this decision is made.
Towards the stable release #
This RC2 should be the final step before the publication of stable version 1.4.0. If no major issues are discovered during testing of this release candidate, we will soon proceed with the publication of stable Siril 1.4.0.
Important note for master branch users: Once the stable 1.4.0 version is released, development of Siril 1.5 will begin on the master branch. Users accustomed to using daily builds from master are advised to exercise caution during the early phases of version 1.5 development, as this period may be more unstable than usual. We recommend waiting a few weeks after the start of the 1.5 cycle before resuming daily use of the master branch.
What we want from you #
As with previous versions, we encourage all users to report any bugs encountered via the Siril GitLab site . For bugs encountered with scripts, it’s here .
Your feedback is essential to help us finalize stable version 1.4.0 under the best conditions. This testing phase is crucial: the more intensively you test this RC2, the higher quality the stable release will be.
Known bugs #
Before opening a new ticket, you can check here if they are already known and/or fixed. Their correction will occur with the release of the next version: