Retype the center and left speakers then make sure they are configured as per your intended purpose ie master/slave and center, left, right etc. Once this is complete, while everything is in standby, press clear on the remote. Report back. Be sure that whatever speaker is set as master in mconfig is set as master in the speaker config. If you have disconnected things, make sure to double check your connections.

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#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
#2 Mark Levinson No5105, Ayre VX8 and CX8, Vandersteen Treo CT, Preamp varies.
#3 Meridian Ellipse