Reader with Foxit PDF reader is not faulty?

04/18/2014 06:21 seadragon1855#1
Today I read a file into PDF with Foxit Reader software that error message

"D: \ study \ ***********.pdf
Couldnot open file.
File not found "

This error alone today because last week my newly found normal users do not see the error. I tried many PDF files are so off. I brought it to another computer open.

You know how to help me see this error!