Ok, just ran into a slight problem
Your plugin. It is preventing sliders in any other extension plugins from working
You probably just used the old Extension example source code. Quite a few changes were made to help prevent plugins from interfering with each other.
In your plugin source, in the sliders section, you need to make sure you have this line:
'This tells RR that the Slider was not processed in this plugin
ReturnSlider = -1
You may have something that looks like this if it is older code:
ReturnSlider = 1000! * Val(Format(Time, "SS"))