No error message when PHP "intl" extension is not enabled

Hello.
I've spent a lot of my time searching for a "bug".
...
I had a headache while searchig for a (not)...

I agree wholeheartedly and still think the Splash Screen should show or at least give informative error messages.

It is unnecessary to fail because of the intl settings not being set or not having writable access to the writable folder. These errors could easily be detected and first time users pointed to the relevant solutions.

The setup is not user friendly and must be off putting to new users