Thorp Air Command - T18.net

To Lee and everybody else, I noticed a good number of the older post had pictures, that appear to be no longer retrievable, hopefully not lost to time. It has a location for the pic, but no pic. Maybe users could also put the the same pic into their album for backup. I tried to add pictures to my album, it didn't work. Have summary of my no-go attempt below:
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Summary of my no-go attempt at adding pictures to my album:

In trying to add pictures, I did the following:

Following these limits:

Maximum dimensions:
File size: 1.95 MiB
Image width: 1280
Image height: 1024

Allowed filetypes:
jpg, gif, png

Entering 6 pictures by selecting "Choose File", and selecting "Continue", got colored in red the following:

"While uploading „EAA-Feb-1962-SA-Thorp-s-T-18-and-June-1993-T-18-The-New-Antique.png“ the following error occurred:
» Could not upload attachment to ../gallery/images/upload/366cc08c2fdd2884e85632330964f858.png.
While uploading „Top-Part-05-22312-05-28663.jpg“ the following error occurred:
» Could not upload attachment to ../gallery/images/upload/07f03c774900e5ba8b1e0c331ae5358a.jpg.
While uploading „Side-Part-05-22312-05-28663.jpg“ the following error occurred:
» Could not upload attachment to ../gallery/images/upload/563312554d71f4b118776ddb8a7dc896.jpg.
While uploading „Locking-with-ring-1-Part-05-28663.jpg“ the following error occurred:
» Could not upload attachment to ../gallery/images/upload/475a2877646ff08b02b5cb3884311817.jpg.
While uploading „Locking-with-ring-2-Part-05-28663.jpg“ the following error occurred:
» Could not upload attachment to ../gallery/images/upload/53ea295e7e642d7c64048ac9f3cff2b8.jpg.
While uploading „Locking-with-ring-3-Part-05-28663.jpg“ the following error occurred:
» Could not upload attachment to ../gallery/images/upload/f4fde4b8df8812680c5dd3597d2ce1be.jpg.
You must enter your path and filename"

I thought the "Choose File" button was entering the path and filename. Is there a limit on the file name itself.

I did try "Locking-with-ring-3-Part-05-28663.jpg", by itself, also came back a no-go red, saying "You must enter your path and filename"
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I deleted my prior post on this and decided to just talk about pictures.
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Thanks,
Shack
N921JK T-18C - Original Airfoil - Flying - Built by John Kenton
N711RF T-18 - Sold - Built by Roy Funk