I also get this for files without a extension. However I can only reproduce this for some filenames. So if I rename any PDF file to
httpprojecteuclidorgDPubSRepository10Disseminateviewbodyidp...lidndjfl1038949542
I get the "Error opening file: Permission denied" message, but I do not get this message if I rename the file to e.g.
TViX_WiFi_English
This does not appear to be a duplicate.
I also get this for files without a extension. However I can only reproduce this for some filenames. So if I rename any PDF file to uclidorgDPubSRe pository10Disse minateviewbodyi dp...lidndjfl10 38949542 WiFi_English
httpprojecte
I get the "Error opening file: Permission denied" message, but I do not get this message if I rename the file to e.g.
TViX_