st: Problems with downloading the collinearity program from ADS

["Rivera, Semilla M." <srivera@sph.uth.tmc.edu>]

Hello, I attempted to download this collinearity program from within STATA by using the "findit collin" command and recieved this error message.  Any suggestions on what I can do?  
 
Thanks, Semilla.

package name:  collin.pkg
        from:  http://www.ats.ucla.edu/stat/stata/ado/analysis/
checking collin consistency and verifying not already installed...
installing into c:\ado\plus\...
could not rename c:\ado\plus\stata.trk to c:\ado\plus\backup.trk
r(699);


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