I just paid for a Plus registration after using the Trial.  I rebooted, (the version now says Plus and everything looks to be working fine).  But when I go to add more slots to the array Devices (and only the Array Devices - Cache Devices works fine) the webgui crashes on me.  I see the new drives fine, the array is stopped, and everything else is working.  There is a kernel error when I try:

 

emhttp[3672]: segfault at 0 ip 00002ba59f54627 sp 00007ffeb2d11a10 error 4 in libc-2.17.so[2ba59f50b0000+1bf000]

 

Any help is appreciated

I got it to work.  I started the array, stopped the array.  Rebooted, started the array again, stopped it again, and then it allowed me to add the slots.