Error message/code: SMTP Error: Data not accepted. Description: The "Data not accepted" error message is coming from your SMTP server. Usually when you get this message, your email shouldn't be sent, because it's being rejected by your SMTP server. Solution: Contact your host tech support...

Error message/code: TCPDF ERROR: [Image] No such file or directory in... Description: It means that article has link  to image <ing src=....> but image does not exits. Solution: Update article, remove or make link to the image correct.

Error message/code: TCPDF ERROR: Could not include font definition file: [font name] Description: By some reason TCPDF could not find required font. Solution: Install required font.

Error message/code: Unable to add/update remote user. The email address for the user exists within our database. Description: Remote authentication trying to authenticate remote user and add him to KBPublisher database but user with the same email exists. Remote user identified by...

Error message/code: Content Encoding Error..., The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression. Description: Browser does not support gzip compression.  Solution: Set $conf['use_ob_gzhandler'] = 0; in file...

 Error message/code: Warning: date(): It is not safe to rely on the system's timezone settings... Description: Since PHP 5.1.0 (when the date/time functions were rewritten), every call to a date/time function will generate a E_NOTICE if the timezone isn't valid, and/or...