Glad to help.
Not sure, it sounds like maybe there is some other plugin (like a cache plugin) that is interfering. Or it could be due to file permissions on the server.
Best advice is to either do some troubleshooting, or simply examine the site’s error log to get more information about what’s happening, source of error, and so forth.
Ok. So I should check for a plugin conflict? I would be surprised because it has worked absolutely fine until the transfer.
If it comes to file permissions, which permissions should I add and to which files please?
Yeah I’m just guessing at possible things to look at, based on experience. Of course, I do not have a magic crystal ball with all the answers. In general, doing some basic testing and troubleshooting is how people diagnose errors.
File permissions vary depending on your server. Basically make sure that all the SAC files are present, and that they have sufficient permissions. You can find a complete guide on WP file permissions here.
That is what is quite tricky. I don’t know what all the SAC files are? And how do you know what sufficient permissions are?
Thanks.
1) “I don’t know what all the SAC files are?”
Look at the plugin. Download the zip file, unzip, and look at the files. Then compare with what’s on your server. They should be identical.
2) “And how do you know what sufficient permissions are?”
WordPress provides a complete guide that covers all the types, etc. See my previous reply for the link.