Run-time error '438':

[William Bristow]

Hi Bob.

Thank’s for looking at this for Bill Martin.

You don’t need any particular plan to generate the crash of Planner and the runtime error.

Open Planner in the Windows 11 24H2 environment with default settings, import the filter names from MaxIm and create a basic plan, 1 frame each of LRGB with 1 minute duration exposures and any valid target coordinates.

Save the plan to your plans folder and close Planner.

Open Planner and verify the plans list pane is empty.

Attempt to import the plan you just saved and Planner will report the runtime error 438 and then Planner will close when the pop-up error box is acknowledged with 'OK'.

I’m away from home this evening ‘till late but if you still need one of my plans to repro the issue I’ll post one when I get back later.

(P.S. I was looking for Windows Common Controls and VB6 component updates for Windows 11 yesterday as part of this problem solving for Bill Martin and only found Microsoft documents suggesting these were not pre-installed, or installable, on Windows 11 24H2, which chimes with your comments above).

William.