QTR-Quadtone RIP

Trying to insert a quad descripter (calibration file) into the R200-R300 folder I get a 
message:"the item ... could not be moved because "R200-R300-GQ cannot be modified.  I'm 
stumped at this point trying to build curves for MIS UT-3D in 2.5.1.  G-4 Mac, OSX 10.4.10.  
Info on the folder showed Read/Write as locked but unlocking it did nothing.  Trying to move 
previous curves built in 2.5.0 into the folder results in the same.  Any suggestions?