To set up a dev site I first dumped the live site database, then loaded this dump into the dev database.

Then I rsync'ed the files across from the live server to the dev server.

Finally I adjusted the "base_url" in "global_conf.php" to point to the dev server.

My dev site now kind of works, but all the CSS and Javascript are missing, so I just have white pages with plain text.

My dev server is trying to load the CSS and Javascript from the live server, but Chrome prevents this.

How to fix?

Make sure you're using 4.0.6 or later and then just go to the ACP > System > Support and run the support tool. It'll drop all built theme files and refresh them.

Thanks very much for the suggestion. Unfortunately that didn't help.

I upgraded to 4.0.6.1, then ran through System > Support as you suggested.

It did a bit of processing, but my site still remains without CSS and Javascript unless I switch on designer's mode.

I did submit a support ticket, but apparently you can't help with dev/test sites, only live.

 

I finally fixed my above problem by going to the ACP then Files > Storage Settings > Configurations > Edit and checking all the paths were correct.