Images are upside down

[frankdarwin]

I have images that display correctly in the File Viewer, but display rotated 180 degrees in the Viewer.
What is the reason for this?

[Mario]

What is "File Viewer" and what is "Viewer" in your post?
What does the EXIF orientation tag say for this image?
Which file format?

[frankdarwin]

I mean the File Window. By Viewer I mean the window that opens when you double-click on the image.
The images are photos in TIF format.
I cannot find an EXIF oriantation.

[Mario]

If the thumbnail in the File Window has a different orientation that the image in the Viewer, the TIFF may contain a badly oriented preview IMatch used for the thumbnail, or the EXIF orientation info is wrong. Hard to tell without a sample file.

Re-save the TIFF in your image editor. This should solve the problem.

[frankdarwin]

I copied the file and deleted the old one.
Now everything is O.K. again.
Thank you.

[meyersoft]

I have the same for some jpg files. Must have a look at them again.

[Mario]

I copied the file and deleted the old one.
Now everything is O.K. again.
Thank you.

Copied the file where? In IMatch?
Copying a file in IMatch just copies the metadata, thumbnail and cache image, nothing is created "new".

If you've copied the files elsewhere and it came into IMatch as a "new" file, thumbnail and cache image are created fresh, too.

If you have another image with this issue, select it in the File Window, press Shift+Ctrl+F5 and select "Force Update".
If there was an issue while reading the file (impossible to know because the log file will be long gone) this should fix it.

[frankdarwin]

Copied the file where? In IMatch?

No. I copied the file in Windows Explorer. Then I deleted the old one in IMatch and renamed the copy.