Dear SL, I am trying to run an application built on an SL3 machine on an SL4 worker. I find the following shared libraries missing: /usr/X11R6/lib/libGLU.so.1 /usr/kerberos/lib/libgssapi_krb5.so.2 /usr/kerberos/lib/libkrb5.so.3 /usr/kerberos/lib/libcom_err.so.3 /usr/kerberos/lib/libk5crypto.so.3 Is there something like a compatibility package which provides these libs? For some of them, only a soft link is missing, whereas for others the actual library may have to be installed, but in a version different from the SL4 one. Cheers, Klaus. -- Klaus Wacker [log in to unmask] Experimentelle Physik V http://www.physik.uni-dortmund.de/~wacker Universitaet Dortmund Tel.: +49 231 755 3587 D-44221 Dortmund Fax: +49 231 755 4547