Running Different Versions of Tools with IDS

Does anybody out there have experience of running varying levels of Informix tools with IDS. We have recently experienced a problem, the solution to which from Informix support, is to install an upgrade to our Informix-4GL product. This upgrade would render it "out of step" in version numbering sense from the other tools in the set. Having upgraded the tool (followed by a re-install of the API/Engine products in the correct sequence of course!) we are left with the following error :- Undefined first referenced Symbol in file getspnam /max/informix/lib/tools/libos.a (ospasswd.o) This has been passed on to Informix support and we await their response. Our suspicions are that running with varying versions of the toolset may have contributed to the above. Any comments anyone ?? INFORMIX-OnLine Dynamic Server Version 7.23.UC6 INFORMIX LIBOS LIBRARY Version 7.23.UC6 INFORMIX LIBSQL LIBRARY Version 7.23.UC6 INFORMIX LIBASF LIBRARY Version 7.23.UC6 INFORMIX-Connect Version 7.23.UC6 INFORMIX EMBEDDED SQL for C Version 7.23.UC6 INFORMIX LIBGEN LIBRARY Version 7.23.UC6 INFORMIX-4GL Interactive Debugger Version 6.05.UD2 INFORMIX-4GL Rapid Development System Version 6.05.UD2 INFORMIX-SQL Version 6.05.UD2 INFORMIX-4GL Version 6.05.UD2 -- OLD VERSION INFORMIX-4GL Version 7.20.UD7 -- NEW VERSION SCO OpenServer 5.0.4 Regards Glyn Balmer BICC Cables Limited Erith Kent UK