When you try to view a PDF file in Adobe Reader or Acrobat, you see the following error:
"There was an error processing a page. Invalid ColorSpace."
If you are attempting to open the file through a browser (that is, from an Internet site), try to download the file to your local computer. Then, open it locally using Adobe Acrobat or Reader. Check the file properties and see if a non-Adobe application was used to create the PDF file.
a. If a non-Adobe application was used, then try using an Adobe application to generate the PDF file again.
b. If it is not possible to re-generate the PDF with an Adobe application, then try to resave it, and/or use the PDF Optimizer tool in Acrobat. This will often fix any obvious syntax errors in the PDF.
This error usually occurs viewing PDF files in the browser when there is a problem with the PDF file itself, particularly for PDF files generated with third-party applications or tools. It will not prevent you from opening the file, but rather, some pages will not be visible.