SQL errors and etc

[Marco van Herwaarden]

This again proofs why i always stress not to repair a database unless it is needed. Reparing tables will never fix "some HTML appearing". It should only be used if a MySQL errors tells you there is corruption.

Try repairing the usercss table a few more times. If this doesn't fix you issue, then you could try to drop the indexes and re-add them. The full definition of this table is (in 3.8.4):
[sql]CREATE TABLE `usercss` (
`userid` int(10) unsigned NOT NULL default '0',
`selector` varchar(30) NOT NULL default '',
`property` varchar(30) NOT NULL default '',
`value` varchar(255) NOT NULL default '',
PRIMARY KEY (`userid`,`selector`,`property`),
KEY `property` (`property`,`userid`,`value`(20))
) [/sql]