PTGui will no longer find control points for my drone dng files

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Bruce Binder

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Mar 23, 2026, 4:48:31 PM (13 hours ago) Mar 23
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PTGui will no longer find control points for my drone dng files I get error code: Assertion failed: TnhUtilities.cpp, line 825

What can I do to rectify the situation?

PTGui Support

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4:29 AM (2 hours ago) 4:29 AM
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Hi Bruce,

Sounds like a bug, I'd like to see if I can reproduce that.

After loading your images (but before pressing Align), could you save
the project using File - Save Project? And then share that project file
and your source images with me at sup...@ptgui.com ?

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com
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