quartus/Nios 13.1 make mem_init_generate error 255

I tried to set the QUARTUS_ROOTDIR via the "Nios II Command Shell.bat" file it gave the error

C:\altera\13.1\nios2eds>"Nios II Command Shell.bat" QUARTUS_ROOTDIR_OVERRIDE="C:

\altera\13.1\quartus\quartus"

C:/altera/13.1/nios2eds/nios2_command_shell.sh: line 175: exec: QUARTUS_ROOTDIR_

OVERRIDE=C:\altera\13.1\quartus\quartus: not found

I checked the folder and saw that it does not have a quartus folder within C:\altera\13.1\quartus

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Update,

By deleting bin folder contents from C:\altera\13.1\nios2eds\bin and replacing it with the contents found in C:\altera\13.0sp1\nios2eds\bin I was able to get everything to work.