Illustrator 29.7.1 crashes on startup with AIHostAdapter installed

[BrianWCSI]

Our extension uses the AIHostAdapter plug-in to listen for application events.

We have successfully been using the plug-in version provided here for Illustrator 2023 and up on Windows (https://github.com/Adobe-CEP/CEP-Resources/tree/master/CEP_11.x/AIHostAdapter/Win). This AIHostAdapter version had been working fine up through Illustrator 29.6.1

However, after updating to the new AI 29.7.1, Illustrator crashes on startup, complaining about the AIHostAdapter.aip plugin. Removing the plug-in file from the Illustrator Plugins/Extensions folder allows Illustrator to start up successfully.

Downgrading Illustrator back to v29.6.1 also allows Illustrator 2025 to start WITH the AIHostAdapter plugin.

We have reproduced this on multiple Windows 11 machines. The macOS version of Illustrator & host adapter does not seem to be impacted.

This is effectively a recurrence of the issue logged as #480 against an earlier version of Illustrator a few years ago.

Is it possible to get an updated version of the AIHostAdapter plug-in that will work with AI 29.7.1? Or any suggestions for workarounds/solutions? Thanks!

[lsh246]

+1 here from Teacup Software - we also depend on the AI Host Adapter plug-in and are running into this issue as well. This is what pops up for us:

[lohriialo]

AIHostAdapter plugin is now natively built into Illustrator starting with the beta version of Illustrator 30.3.0.73 posted on Creative Cloud desktop app today. It’s no longer required to externally install AIHostAdapter, please try the latest beta version 30.3.0.73, test your workflows and give feedbacks before it goes from beta to public on Illustrator Pre-release program https://forums.adobeprerelease.com/illustratorpr/categories/desktop-release-notes