[Gimp-user] Can't get "Themes" to work

[knuckledra99er <forums gimpusers com>]

I've started using GIMP a lot in the past 12 months, getting better as time goes
on. Really like it, the more familiar I become with the functionality, the more
I impress myself with it's capabilities.

Using GIMP 2.8.6 on a Windows 7 64 bit machine, and I probably have what would
be considered "moderate" computer skills. Not writing code, nor compiling my own
software, but I know my way around a machine and can usually work my way through
manual installs where files have to be copied into specific directories, etc.

Anyway, thought I'd give "themes" a try,  and as you can see from the attached
file have a number of themes present   in the c:\Program files\GIMP
2\share\gimp\2.0\themes directory (as online sources state is necessary).

And, in GIMP, if I navigate to EDIT>PREFERENCES>THEME   all of those choices are
selectable.

BUT,  no change results from selecting any of them and then clicking on "OK", 
it doesn't matter if I shut down GIMP or not. All I get is the default theme.

Questions:

1. what am I missing/ doing wrong?  Is there some *.dll file that I need  to
obtain and insert into a   particular directory?

2. Are the Various and sundry GIMP themes that are available safe to use on my
PC. The potential for malware concerns me since no add-on themes seem to be
available from the gimp.org  distribution. Are there gimp themes that are
considered"trusted source" by the community?

As a postscript, I need to mention that when I was trying to use an automatic
installer ( the "GIMP THEMES 1.0"  product) the install routine kept insisting
that I use " C:\Program Files (X86)\GIMP 2"  as  the install-to location, when
in fact there is no such animal on my machine, and manually changing the
"install-to"  location in the box provided to the correct location had no
effect. The install routine created  it's own directory in the C:\Program Files
(X86) directory regardless of my efforts to change it.

Thanks in advance for any help

Attachments:
* http://www.gimpusers.com/system/attachments/206/original/GimThemeDirectory.png

-- 
knuckledra99er (via www.gimpusers.com/forums)