Index: openacs-4/packages/acs-content-repository/tcl/revision-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-content-repository/tcl/revision-procs.tcl,v
diff -u -N -r1.31 -r1.32
--- openacs-4/packages/acs-content-repository/tcl/revision-procs.tcl	27 Oct 2014 16:39:12 -0000	1.31
+++ openacs-4/packages/acs-content-repository/tcl/revision-procs.tcl	14 Jul 2015 11:37:50 -0000	1.32
@@ -72,6 +72,9 @@
 	    if {$filename eq ""} {
 		error "No content for the revision $revision_id.\
 		This seems to be an error which occured during the upload of the file"
+	    } elseif {![file readable $filename]} {
+	      ns_log Error "Could not read file $filename. Maybe the content repository is (partially) missing?"
+	      ns_return 404 text/plain {}
 	    } else {
 		if { $string_p } {
 		    set fd [open $filename "r"]