Hi all,
I have a big problem about iViewer(no matter 4 or 5 or next) with iOS26
1. There is a GUI file
2. "File" > "Export" > "Project Archive"
3. The zip file is created. (let' s say "file.gui.zip")
4. I uploaded the zip file to ftp.
6. Launch iViewer.
I have used this method many many times before.
But one day, it happens on iOS26.
7. It shows an error says "Failed Loading User Interface"

To solve this big problem, before I update the zip file to ftp
2-1. Unzip the zip file and copy to a folder.
2-2 zip by Windows OS function (See below.)
2-3. the zip is created now.
2-4. Upload the zip file to ftp
2-5. Load the zip
It works properly.
I escalated this issue to CF team in 22 th October 2025.
CF team, this issue shouid be well-known issue.
Please update how is the status?