I'll will try to summarise here the errors that appear in the logs when exporting pages or spaces to PDF. Please feel free to add to this list.

• [WARNING] table-layout=auto is not supported, using fixed!
• [ERROR] At least one of minimum, optimum, or maximum IPD must be specified on table.
• [ERROR] Error while creating area : Error while recovering Image Informations (file:/confluence/images/icons/rss.gif) : \confluence\images\icons\rss.gif (The system cannot find the path specified)
• [ERROR] Unknown enumerated value for property 'relative-align': baseline
• [ERROR] Error in relative-align property value 'baseline': org.apache.fop.fo.expr.PropertyException: No conversion defined
• [ERROR] property - "font" is not implemented yet.
• [ERROR] property - "background" is not implemented yet.
• [ERROR] Error in margin-top property value '0px font-size: 12px': org.apache.fop.fo.expr.PropertyException: illegal character
• [ERROR] Error in margin property value '0 0 0 36px color: rgb(102, 102, 102)': org.apache.fop.fo.expr.PropertyException: illegal character