"Unable to update: renamed HldsUpdateTool.exe but the file is still there" error

[SirQuack]

Hey all,

There is something wrong with my hldsupdatetool.exe installation...

It keeps on giving this error when updating

-- UPDATING SERVER CORE --
This will take a long time, I would recommend you go do something else.
Updating/installing Garrysmod
Checking bootstrapper version ...
Getting version 38 of Steam HLDS Update Tool
Downloading. . . . . . . . . .
Updating/installing CS:S
Unable to update: renamed HldsUpdateTool.exe but the file is still there
Checking bootstrapper version ...
Getting version 38 of Steam HLDS Update Tool
Downloading. . . . . . . . . .

I already tried reinstalling the tool but it has no effect.
(I downloaded the latest version from valve)

Any ideas?

Thanks in advance,
Roelof