Installation

From biot0595@eurobretagne.fr Tue Aug 13 00:38:22 1996 Subject: Installation We installed NONMEN on a HP pentium vectra VEZ 5/75, 16 mega (Windows 95), with the professional edition of Fortran Power Station (Microsoft) for Windows 95/NT Version 4.0). Does this environment sometimes cause numerical calculation problems? When I use the programmes, I repeatedly get the following message on my print-outs: "R matrix algorithmically non positive-semi-definite but nonsingular" while another person who uses this programme on VAX never had this problem. NONMEM is installed in double precision. How can I resolve this problem? Thank you in advance for your help...;