Thread:Extension talk:MediaWikiChat/Database Error: A database query error has occurred. This may indicate a bug in the software./reply (8)

It was bytea, as was converted by the converter, changed it to bigint and it worked. But, when I tried logging in to the wiki from other user(from different machine), it gave the following error: Fatal error: Class 'wAvatar' not found in /path/to/MW/folder/extensions/MediaWikiChat/MediaWikiChatClass.php on line 37.