Capture & Print error Noté 5 sur 5 étoiles

Since a few days, I receive the following error on every page:"Sorry, this is not a suitable HTML document." ???

Diego,
You're right: I installed EagleGet a week or two ago. After disabling it, Capture & Print worked like a charm. Thank You very much !

Cette critique est pour une version précédente du module (0.1.8.3.1-signed.1-signed). 

Most likely you've installed a new add-on which is wrongly altering HTML documents outside their <body> element, which is not allowed as per the standards.