[xcrysden] xcrysden in windows error

[Testuser Name]

Dear all,
  When I running xcrysden (XCrySDen-1.4.1bin-shared) on the  cygwin.
and run FILE + ExCrysDen Examples+WIEN struct files
a error message apear 


error copying "C:\XCrySDen-1.4.1bin-shared\tmp/xc_960/xc_struc.960" to "xc_struc.960": permission denied
error copying "C:\XCrySDen-1.4.1bin-shared\tmp/xc_960/xc_struc.960" to "xc_struc.960": permission denied
    while executing
"file copy -force $file $name"
    (procedure "gunzipXSF" line 10)
    invoked from within
"gunzipXSF $file"
    (procedure "OpenStruct" line 24)
    invoked from within
"OpenStruct .mesa $system(SCRDIR)/xc_struc.$system(PID)"
    (procedure "wnOpenSFile" line 71)
    invoked from within
"wnOpenSFile $file"
    (menu invoke)
what is the problem please



      
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