Error 4201: Error UPX compression failed - reason: rename error: Permission denied

[JGHowland]

I have been getting this error very consistently working on a Windows 7 Professional system (x64), building a 32-bit setup package. I have looked to see if I could turn off compression and didn't see such a possibility (I admit I may be slightly blind). I have to ensure we don't get this issue when I turn this process into an automated packaging system.

The message I receive on a regular basis at the end of the log:

Creating setup configuration file...
Initializing archive file...
Creating archive header...
> Launcher manifest
> Writing version information
> Setup engine
> Setup manifest
> Compressing setup
Ultimate Packer for eXecutables
Copyright (C) 1996 - 2013
UPX 3.91w Markus Oberhumer, Laszlo Molnar & John Reiser Sep 30th 2013

File size Ratio Format Name
-------------------- ------ ----------- -----------
3818496 -> 1388544 36.36% win32/pe ir_tmp_rtm.tmp

Packed 1 file: 0 ok, 1 error.

upx: C:\Users\jhowland\AppData\Local\Temp\_ir_sf_build_ 0\ir_tmp_rtm.tmp: IOException: rename error: Permission denied

Error 4201: Error UPX compression failed - 0 (1)

Build failed - 1 Error(s), 0 Warning(s)

-----------------

Any ideas?

[Ulrich]

Please turn off the background / realtime / on-access antivirus scanner and try again. If you have active product maintenance, make sure that you are using release 9.5.1.0...

Ulrich