C51 Fatal Error L220

Hello,

I have a legacy system which was working fine (compile, link and target created successfully). The system was untouched for a year or so. But now, I couldn't able to build work space successfully.

OS: Windows XP 

When i try to build existing workspace, it ends up on linker error. 

The C51FPL.LIB is exist in the path. Is the library or installer corrupted. Please share your comments. 

Thanks!