This post is about Windows only. No other platform is affected.

If a Windows computer is running a version of Spectral Analysis earlier than 4.12, and the user attempts to use the self-update mechanism, the update will fail, as shown in the dialog below.

The workaround is to download Spectral Analysis 4.12 or later directly, and install using that file. You do not need to first remove the older version of Spectral Analysis, but there is no harm in doing so. Subsequent self-updates should succeed.

Windows applications are cryptographically signed to indicate that they are from the publisher they claim to be from. In early 2024 Vernier Science Education had a small but significant name change in its transition to a Perpetual Purpose Trust. As a result there is a one-time hiccup in updates to Spectral Analysis.