Internal error encountered, Failed to generate Printed Documentation.

I am trying to create a PDF but keep getting the error:

Starting to build Printed Documentation...
Printed Documentation processor 8.0.1.204

Building C:\Documents and Settings\hlovric\Desktop\v05_18 new\Dev-Help\Developer Guide Help\!SSL!\Printed_Documentation\Monexa-v05_18-API_Developer_Guide-R03.doc ...

Preparing to create Printed Documentation...
Clearing output folder...
Preparing files for Print Document...
Copying files...
Updating files...
Finished preparing in 6 seconds.
Preparing environment...
Printed Document Generator Environment: Word 11.0.5604,  OS 5.1.2600, RAM 1013 M Bytes
Building Printed Documentation 'Monexa-v05_18-API_Developer_Guide-R03'...
Building Single Document 'Monexa-v05_18-API_Developer_Guide-R03.doc'...
Building 'Title Page'...
Building 'Copy Right'...
Building 'Revision History'...
Building 'Table of Contents'...
Preparing to build chapters...
Building 'Introduction'...
Building 'Communications Overview'...
Building 'Method Overview'...
Building 'API Administration Methods'...
Building '5. Account Management Methods'...
Processing 'Account Management Methods'...
Processing 'CREATE_SUBSCRIBER'...
Warning: style (p.Default) is not defined and will be mapped to 'Normal'.
Warning: style (p.CM37) is not defined and will be mapped to 'Normal'.
Processing 'UPDATE_SUBSCRIBER'...
Warning: style (p.Header) is not defined and will be mapped to 'Normal'.
Processing 'LOOKUP_SUBSCRIBER'...
Processing 'CHECK_PASSWORD'...
Processing 'SEARCH_SUBSCRIBER'...
Building '6. Account Information Methods'...
Processing 'LIST_INVOICES'...
Processing 'LIST_STATEMENTS'...
Processing 'LIST_USAGE_DATA'...
Processing 'LOOKUP_ACCOUNT_HISTORY'...
Building '7. Account Billing Methods'...
Processing 'CREATE_BILLING_LINE_ITEM'...
Processing 'CREATE_BILLABLE_EVENT'...
Processing 'PROCESS_TRANSACTION'...
Building '8. Product Catalog Methods'...
Processing 'CREATE_PLAN'...
Warning: style (p.Footer) is not defined and will be mapped to 'Normal'.
Processing 'UPDATE_PLAN'...
Processing 'DELETE_PLAN'...
Processing 'LIST_PLANS'...
Processing 'LOOKUP_PLAN'...
Processing 'SEARCH_PLAN'...
Processing 'CREATE_PRICE_BOOK'...
Processing 'DELETE_PRICE_BOOK'...
Processing 'LOOKUP_PRICE_BOOK'...
Processing 'CREATE_PRICE_SHEET'...
Processing 'DELETE_PRICE_SHEET'...
Processing 'LIST_PRODUCT'...
Processing 'LOOKUP_PRODUCT'...
Building 'Response Format'...
Building 'iTAPP Interface vs API Terminology'...
Completed building chapters...
Building 'Glossary'...
Building 'Index'...
Updating list paragraphs...
Updating images...
Updating page numbers...
Updating page headers...
Updating Table of Contents...
Updating Index...
Saving 'Monexa-v05_18-API_Developer_Guide-R03.doc'...
Generating 'Monexa-v05_18-API_Developer_Guide-R03.pdf'...
Failed the generate PDF file 'C:\Documents and Settings\hlovric\Desktop\v05_18 new\Dev-Help\Developer Guide Help\!SSL!\Printed_Documentation\Monexa-v05_18-API_Developer_Guide-R03.pdf'...
Failed to save 'Monexa-v05_18-API_Developer_Guide-R03.doc'...

Internal error encountered,  Failed to generate Printed Documentation.

I am using:

Robohelp 8

Acrobat 9.0

Windows XP

My files are saved locally and I have already re-registered the Acrobat 8's PDFOfficeAddin.dll. Any ideas?