XF 1.5 DOMDocument not found

[Spleen]

Have this in my Server Error Logs but have no idea what it means. Anyone have any ideas? Thanks.

 

[Jeremy P]

Your PHP installation is missing SimpleXML support. You'd have to install it, or ask your host to, as XF requires it.

 

[Spleen]

Thanks. Any idea why it's suddenly cropped up?

 

[Jeremy P]

Have you recently upgraded PHP or moved servers? Only certain things make use of it, so it might have gone unnoticed for a little bit.

 

[Spleen]

Long story to be honest but short version is previous host went tits up, managed to get an old back up and reinstalled on new host, been running for about a month or so. Some fiddling going on in the background with file deletion and uploading stuff (tapatalk and the odd image). Other than that not much else really.