Are you on Windows or Mac?
On Mac as far as I know it should work in the nightly, please report your CP version (at the top of the window) and the error you're getting if it doesn't. (In the black console window you'll see something like the following)
Could not load measureradialentropy
Traceback (most recent call last):
File "cellprofiler\modules\__init__.pyc", line 294, in add_module
File "C:\Program Files\CellProfiler22\cellprofiler\modules\plugins\measureradialentropy.py", line 15, in <module>
ImportError: No module named module
For Windows the nightly build has unfortunately been broken for a while so you'd need to install from source to get 3.0; if your analysis isn't super urgent we're hoping to have nightly builds fixed for Windows in the next couple of weeks, so if you don't want to have to build from source you can stay tuned for that.