Just a heads-up to anyone ... if you're trying to upgrade, backup, import or export and you're stuck on the Processing screen, you are probably using Chrome v83.
You need to upgrade CS Cart to 4.11.4.SP2 ... there's a bug fix for this problem, as noted in the 4.11.4.SP2 changelog.
4.11.4.SP2
[!] Core: Installation and upgrade, backup and restore, export and import, and some other actions didn’t work in Google Chrome v83. Fixed.
This issue (Chrome v83 + cs cart) affects all the versions I checked from 4.3 and above... This is a VERY serious issue. Does anybody know if there is a fix for all those versions (besides 4.11.4 SP2) that are affected?
Did anyone else still have the issue after updating the ajax.js file exactly the way the instructions mentioned in the two places that needed swapping? Unless I still have some browser cache, it is still an issue on the Chrome 83 I tried - and in incognito mode. Still works fine in FF and Edge though...