Could you send me exactly how you are launching grid_ftp? I need to see how you are specifying the LD_PRELOAD envar. Also, you can test that the library works just fine using something like: LD_LIBRARY_PATH=<path> export LD_LIBRARY_PATH XROOTD_VMP=<server>:<port>:<patha>=<pathb> export XROOTD_VMP LD_PRELOAD='libXrdPosixPreload.so' export LD_PRELOAD $* Give it a whirl with, say, ls -l (i.e. ldo ls-l) and let me know what happens. Andy -----Original Message----- From: anonymous Sent: Wednesday, September 21, 2011 5:00 PM To: Brian Bockelman ; Lukasz Janyst ; [log in to unmask] ; [log in to unmask] Subject: [bug #86984] Xrootd 3.1.0 - preload Follow-up Comment #10, bug #86984 (project xrootd): I am running the plugin on: Scientific Linux SLF release 5.5 (Lederman) Linux fermicloud040.fnal.gov 2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 00:48:58 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux _______________________________________________________ Reply to this item at: <http://savannah.cern.ch/bugs/?86984> _______________________________________________ Message sent via/by LCG Savannah http://savannah.cern.ch/