Trouble reading EMF and EPS graphic files

[Samuel Gamtessa]

Hello,
 
I have encountered a strange problem that I never did before.
 
The graphic files in .eps and .emf files are not properly read anymore, showing 
a message "error connecting to a readable format" 
 
I have never encountered this previously except that on a mac, I needed a 
separate software called "eps to pdf." I am working on a pc currently and I did 
not face this trouble previously.
 
What might cause such a problem?
 
thanks!