I was testing out 5.2.0-RC1 release recently and found, that no upload can be made on Front-End.
For example on a link submission page select an image and try to upload it. Error "Can't save file" will be displayed, but "/system/images/" folder is writable and I've checked it twice.
After some investigation I've found that this happened because of a fix in
http://tracker.in-portal.org/view.php?id=1291 task, where variable
$value['error'] containing regular upload status code was converted to string, but later on was compares using "===" operator with integer constant resulting in "no match" at all times.
Ready for testing.
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Best Regards,
http://www.in-portal.comhttp://www.alex-time.com