Which version of Lightroom are you using?
Can't Click on anything : Do you mean the application or the computer is frozen?
Also, which operating system are you using?
Could you please share a screenshot?
i am using lightroom cc 2015.1.1 and my operating system is windows 8.1
im honestly not sure if the application is frozen, but the computer is not frozen.
when i move the mouse, nothing highlights or lets me click on anything
It looks like you may have inadvertently created an empty catalog.
Go to File > Open Recent, and see if there is another catalog you can open.
when i mouse over file it highlights, but when i click on it it does nothing.
I assume you can open and close the program normally?
Close LR, then hold down Alt and Shift while opening the program.
You should then be asked if you want to reset the preferences - click yes.
Maybe this will fix the problem.
it worked! thank you so much