Jens, could you please try setting
LD_LIBRARY_PATH=/home/jens/codeblocks-tmp/lib
and see whether that will prevent your plugins from loading correctly?
The problem I have is no root access --> I must set LD_LIBRARY_PATH to find libwx_gtk2u-2.8.so.0
It works the same way if I set LD_LIBRARY_PATH or not.
Where does your build looks for the plugin.
If C::B has started there should be two lines in the "Code::Blocks" tab in the logs where C::B tells you where it looks for plugins.
For me it looks like:
Scanning for plugins in /home/jens/.codeblocks/share/codeblocks/plugins
Loaded 0 plugins
Scanning for plugins in /home/jens/codeblocks-tmp/share/codeblocks/plugins
Loaded 28 plugins
You can also start C::B with "-d" parameter and look in the debug-log if there are error-messages.
Is your wxWidgets installed in your home-dir or is it a global install.
Normally if everything is linked correct you don't need the LD_LIBRARY_PATH variable set.
You can look against which libraries C::B is linked by running