problem starting slpuasa on Solaris

We are installling eDirectory 8.8.1 on Solaris, and we have a problem
starting slpusa. It shows:
Starting NDS SLP services...
ld.so.1: slpuasa: fatal: libgcc_s.so.1: open failed: No such file or
directory
Killed
slpuasa startup failed

The library exists and is located in:
/opt/ecc/exec/esnapi/solaris_lib

We´ve another server that is the same (same hw, same sw, same
patches),
and in that case slpuasa starts without problems.

PD: In both servers, the library directory isn't set on LD_LIBRARY_PATH.