For what it's worth, I was seeing these GENCFG err's on a few SRX100's on 10.0R1.8 and R2.10. I also noticed my HA light wasn't functional on a 650 cluster on those software versions (though I'm not positive whether or not we were seeing the GENCFG errors there).
Upgraded to 10.0R3.10 and I'm no longer seeing the GENCFG err's, and the HA light is working properly on my 650 cluster.
As a precaution, you should contact JTAC and get some info on the error. I was told it was going to be fixed in newer versions but not sure if it was and if not, when it will be fixed. Better to be safe.
These are the error which came while we admin up the fpc in any slot or power up then during post test these alarm generated , but after 5 min after completed the power on self test , all alarm vanish .
So no need to upgrade it will work fine after that.