For some reason I can alter everything up to .form-select but everything after that is empty. When I add style data to .form-button and below nothing saves.

I tried copying the style but now it won't delete the additional copy.

It can't be the CHMOD because it's saving changes to styles above .form-select.

I have no idea what is going on here.

OK, I've upgraded to 7.1 and it's still the same. It does it with both the ubbthreads style and my custom style.

I have enabled MySQL database logging but it's clean. I've also done a database "repair" on the server.

Hmm, that sounds something like a PHP issue that we've seen before. Can you look at your phpinfo page and see if you have any varfilter settings in there such as:

varfilter.max_array_depth 100 100
varfilter.max_array_index_length 64 64
varfilter.max_request_variables 600 600
varfilter.max_totalname_length 256 256
varfilter.max_value_length 200000 200000
varfilter.max_varname_length 64 64

No, there are no varfilter settings listed in the phpinfo page.

Any more info on this? Is it a server issue?

I can't understand why it's started doing this now. I also can't understand why it will let me change the style sheet up to a certain point but no further.

Doesn't make too much sense. Will probably need a support ticket for this so I can take a look, but first lets eliminate some quirky browser issue. What browser are you currently using?

I don't think it's a browser issue as it does the same with both IE7 and Firefox.

I tried an Advanced ticket but when I log in it says that I have no credits. Do I have to purchase a credit for someone to look at this problem?

Submit a basic support ticket; advanced support requires support units and are for advanced issues only; if Rick has requested the information, i highly doubt he's expecting you to pay for support on the issue.