TIF-files not visible

[Rikard]

It has suddenly happened that most, perhaps all, tif-files are not visible in the viewer. After opening in Photoshop and then saving the thumb shows. The tif file is in the folder as before. What is happening?
/Rikard

[Mario]

It would be helpful if you switch IMatch to debug logging, try to open some of the failing TIFF files in the Viewer, then ZIP and attach the log file (see log file). So far, we have nothing to base any analyzes on.

Also, reboot your PC once and then retry. Since Windows no longer really reboots when you shut it down, all kind of "stuff" can accumulate over time, and suddenly you have strange effects...

[Rikard]

Hi, restart done without any change. Thumbfiles are visible after I have opened the file in Photoshop and saved it. I understand that the blurr is made by imatch to use the thumb instead of the real file which seems to be out of reach for imatch.
(Please don´t make the log available in the forum.)
Regards, Rikard

[Mario]

(Please don´t make the log available in the forum.)

All attachments are public. If you want to send something in private, send via email to support support email address with a link back to the community topic. I have removed the attachment this time for you.

Also, please ZIP log files to reduce them in size. Your log file takes 1.3 MB disk space on the server, but ZIPped it would take only 70K.

I see several warnings like

PTPIP::LoadThumb failed with Unknown image type.
PTPIP::Load failed with Not a TIFF file.

Since there are probably over 100 different TIFF variants in circulation (not counting all the RAW variants, which are also TIFF-based), there is always a (quite rare) chance that none of the 3rd party image libraries nor the official WIC TIFF codec IMatch employs when reading TIFF images to read a specific TIFF variant.

Re-saving the exotic TIFF in a modern image editor usually solves the problem. Since this is a lossless operation, it is the way to go when you encounter this problem.

[Rikard]

Hi,
Thanks for the delete. Sorry about the txt that should be a zip - I had it prepared but was in a hurry and took the txt.

Would there be any info about the needed properties of a ti/tiff-file?

Regards, Rikard

[Mario]

Would there be any info about the needed properties of a ti/tiff-file?

Not really. When the standard 3rd party image library does not handle a TIFF (which is rather rare), IMatch makes a second attempt using the TIFF WIC codec. If this also fails, IMatch logs the warning and continues with the next file.

TIFF is a file format that usually causes no issues. And if an exotic TIFF is rejected, I just re-save it in Photoshop, problem gone.

[Rikard]

Hi,
I have worked with tiff and with several systems since the early nineties and never had any problem so i doubt that there should be a problem with ageing tif-files.
I have tried to open a tif, and then saving it, from Photoshop. It makes the thumb-file to wake up but not the original file.
Regards, Rikard

[Mario]

What does " it makes the thumb-file to wake up but not the original file." mean?
IMatch produces thumbnails and cache images from the TIFF, which is the original, no?

[Rikard]

Hi,

The thumnb file is visible after that maneuver but not the original file when looking at Viewer, only the Thumb-version.
It seems that Imatch has a problem with connecting to the tif. Could it be something related to the cache? Of course it could be something I have done...

Regards, Rikard

[Mario]

If IMatch can produce the thumbnail, it should also be able to produce a cache image.

The usual steps:

1. The log file from the session where you encountered the problem, so I can see the warnings and errors.
2. Upload a couple of sample TIFs which cause this to your cloud space of post a link.

If you are worried about privacy, send the log file and link to me via email: support email address and include a link to this topic in your email. I get many emails per day, and this helps me to know what's what.