The problem is in your webserver configuration, you should check the error log file from apache concerning your website and you will find out what is the problem.
It is a security module in apache or php I don’t remember exactly the name but reading the error log helped me to find the solution.
Faithfully Yours
Michaël
I reverted to the version 4.305 and I haven’t anymore the problem to save settings….
I even try to update the working version with the last one and it didn’t sorted me out to.
Installing version 4.305 waiting a working release.
Michaël
Same problem for me I’m unable to save any settings
