Problem with SDK and DSP56F805

Hi everyone, Ive worked with a DSP56F803, but ive had problem with the decoder, to make the mesurement of speed. so a made a change to a DSP 56F805, but when a make a compile a  elemental program, i have the following errorCan't write link map "".

An unknown error occurred when linking target "sys" for project "sys.mcp".

Could not find or load the file "sys.lib" for target "External RAM" for project "pruebas051.mcp".

 

the second error is Can't write link map "".

An unknown error occurred when linking target "sys" for project "sys.mcp".

Could not find or load the file "sys.lib" for target "External RAM" for project "pruebas051.mcp".

 and the third error is Can't write link map "".

An unknown error occurred when linking target "sys" for project "sys.mcp".

Could not find or load the file "sys.lib" for target "External RAM" for project "pruebas051.mcp".

 

In eny program that i made, these error apear, if anybody can explain me how to fit them