Thanks lardman for your help, but after installing libgcc_s.so, I now need libc6.so and I think it's pretty clear my current ROM doesn't satisfy the requirements. I found it a little bit frustrating to have no clue at all when visiting the ZSI site about which package run on which ROM and/or Z model.Anyway, I plan to switch to OZ as soon as it runs satisfactory on the Z6K.