After the last round of sw fiddles (never listed as a formal sw update),
the attached screen shot shows the error that does not clear unless a channel change or reboot is invoked.
This is a very old issue that has resurfaced again.

Octo LNB; 2 by 2x4 MS; 2 by ES 5-2; Dedicated PSU for LNB, ES's, MS's; HD PVR 4P x 2; Explora 1; DSD 660; FSM