Reobf Error.

Hello everybody, I have been helping my friend make a mod. But It seems like my Reobf is not working... Here is the error

== MCP 7.25 (data: 7.25, client: 1.4.6, server: 1.4.6) ==
# found ff, ff patches, srgs, name csvs, doc csvs, param csvs, renumber csv, ast
yle, astyle config
> Creating Retroguard config files
== Reobfuscating client ==
> Cleaning reobf
FATAL ERROR
Traceback (most recent call last):
File "runtime\reobfuscate.py", line 51, in reobfuscate
reobfuscate_side(commands, CLIENT, reobf_all=reobf_all)
File "C:\Users\Quickhead555\Desktop\MCP's\MineColony\runtime\mcp.py", line 152
, in reobfuscate_side
commands.cleanreobfdir(side)
File "C:\Users\Quickhead555\Desktop\MCP's\MineColony\runtime\commands.py", lin
e 875, in cleanreobfdir
reallyrmtree(outpathlk[side])
File "C:\Users\Quickhead555\Desktop\MCP's\MineColony\runtime\commands.py", lin
e 79, in reallyrmtree
raise OSError(errno.EPERM, "Failed to remove: '" + path + "'", path)
OSError: [Errno 1] Failed to remove: 'reobf\minecraft': 'reobf\\minecraft'
Press any key to continue . . .


Thanks in advance for helping me.