Processing page with a specific language returned blank or unreadable.
Depending on the language and settings used, most of the time blank pages may be returned due to insufficient fonts for the specific language.
Also, the document language may not be recognized.
Install language-specific fonts depending on the language.
Note: It is a common case scenario, thus, if this does not help don't hesitate to contact the ABBYY Support team and start an investigation of the issue.