Some of my data fields on a client's site are missing data on the Admin page. Thankfully all the user content side fields are working fine and the TCMS Blog is good too. The Java Console shows type '500' errors showing on the fields that are missing data. 

Each time I load the page these appear against different fields, even though I know the data is there.

I'm pretty sure I've seen this before and I'm 99% certain its to do with the host. The client is on hosting with 123Reg and their site is 12 years old so I'm guessing the server is of a similar vintage.

Chatting to the client, their site is 11 years old and the hosting the same so I am 99% certain that 123Reg hosting is the issue. I have advised them to move to Siteground.co.uk, especially since they also want to install SSL.