Try the following
(Make sure you're using ULX v1.13 (latest 1.x version)
Move the lua plugin files you downloaded into gmod9/lua/ulx/modules
.. the modules folder is the equivalent to lua/init, but, ulx executes those files only after ulx has loaded. This way, no changes to ulx_init need to be made (normally).
Remove those openscript lines from your ulx_init file. (ulx/modules/*.lua load automagically)
If that doesn't work, it may be conflicts among the plugins.
I've used findplayer and cleaner successfully together.
Not sure how the others would affect each other.