Encryptd altera library mapped Empty

when we used modelsim 10.4b altera started edition in linux,the cyclonev_hssi_ver is mapped Empty in the tool library option.When we located the cyclonev_hssi_ver in src/verilog we find that it is the encrypted mentor library files are compiled in the directory but unable to map in the tool and we are unable to use the library in the code.

Please provide feedback.