There was an error opening this document. This file cannot be found.

I am trying to convert a few Microsoft Word documents into .PDF files on a Vista machine. This is a usual process that I try to follow and now this keeps coming up with an error message.
Below is the message that I get, every time I try to convert the document file to .PDF.
Adobe Reader
There was an error opening this document. This file cannot be found.
I follow the normal procedure of selecting the set of documents and start the conversion. It starts and finishes it but when I try to open the .PDF file it comes up with this error message.
This happens at times even when I try to open any .PDF attachment from my Chrome web browser.
Does this have a solution?
