Validation Errors

Hello,

When running the DAISY 3 validation process, I am encountering several errors all of a sudden (I did a document earlier with no problems). The error messages are as follows:

[INFO, Validator] Validating with ZedVal version 2.1 RC1
[ERROR, Validator] A validation error occurred: bad character content for element Location: file:\C:\Documents%20and%20Settings\username\My%20Documents\Obi%20Daisy\Vision%20Bulletin%20d'information%20Ete%202009\DAISY\obi_dtb.opf 9:42
[ERROR, Validator] A validation error occurred: bad character content for element Location: file:\C:\Documents%20and%20Settings\username\My%20Documents\Obi%20Daisy\Vision%20Bulletin%20d'information%20Ete%202009\DAISY\obi_dtb.opf 10:35
[ERROR, Validator] A validation error occurred: bad value for attribute "lang" from namespace "http://www.w3.org/XML/1998/namespace" Location: file:\C:\Documents%20and%20Settings\username\My%20Documents\Obi%20Daisy\Vision%20Bulletin%20d'information%20Ete%202009\DAISY\obi_dtb.ncx 3:88
[WARNING, Validator] Set error severity threshold breached. Transformer aborting.
[ERROR, Pipeline Core] Task Validator failed