You certainly should revise your server settings in terms of max_input_vars, max-execution time, etc. Your server seems to be seriously messed up. Are you using the exactly same version of LS on both servers?

Hello,
No. For the server with problem LimeSurvey Version 4.1.8+200302.
For the one that works is 4.2.3+200511
I saw that max-execution-time is 30.
From here I understand that should be 0.
stackoverflow.com/questions/5140258/incr...cript-execution-time .

Should I also change max_input_time, memory_limit? Other suggestion of parameter would be nice.
I will change to 0 max-execution-time and see if it works
Thanks

I personally wouldn't go for 0, because this means that there is no limit at all. If something goes wrong your script might run and run and run and never get "killed".

I am not an expert on this, thus I don't really want to give recommendations. But 30 seconds sounds pretty reasonable to me. In 30 seconds any reasonable script should finish I think. I might be mistaken though. Let's wait for someone else with more experience in server settings (like Denis or Jelo, for example).

Why don't you update the server with the problem from LimeSurvey Version 4.1.8+200302 to the other one (or both to the latest LS 4.2.5+200526) and see what happens?

And: if it works on one server, why not using the same php settings on the other server?