The qnx_cp or cp that comes with qnxsdk 6.4.1 has a bug.  It gives an error if the destination has a file of similar 
name, but with .exe extension.  For example, if my destination folder has test.exe, I cannot copy the file "test" to 
that folder.

Contents of \destination:
test.exe

qnx_cp test \destination\test.exe
cp: cannot create regular file `\\destination/test': No such file or directory

It would succeed if the file had an extension other than .exe.  This operation worked correctly on qnxsdk 6.3.  I use 
this copy utility in my project postbuild.  From the IDE, the error message was something like "cp: cannot remove `D:\\
my_file': No such file or directory".  Slightly different error message, but same results.  Does anyone know of this 
issue and is there a fix for it?