Is there an automatic fix when you have done your validation? Or do you have to fix the problems yourself?
Based on the number of questions you are posting, it might be wise to first read the Font Creator User Manual (the part about Font Validation should help). The manual is available through:
Start → Programs → High-Logic → Font Creator User Manual.
The manual is also available online:
http://www.high-logic.com/manual/index.html