This message is produced in releases earlier than Solaris 2.5.1. It is not produced in releases after Solaris 2.5.1.
For more information about the cause, refer to "ld.so.1: string: fatal: string: open failed: No such file or directory". It has the same cause.
For the resolution, refer to "ld.so.1: string: fatal: string: open failed: No such file or directory". Their resolutions are the same.
For more information about the Linker, see the Linker and Libraries Guide.