Please excuse the over zealous safety warning, Dexter's reply was completely wrong and I have seen people get one reply to there question and just do it...I'm savvy enough to know not to combine them. That's why I spoke up. This is today's configuration, BTW... Likely to change next time the MultiPlus acts up...
The only thing abnormal on these screenshots is that I have the inverter output voltage lowered in hopes that it would have some affect on the voltage/hz sync...
Like I said, grasping at straws....
I would suggest increasing your AC in disconnect to 106v and connect to 110, disable UPS, enabling dynamic current limiter, and lowering the input current limit to 40amps. Your 10kw generator is not capable of 50amps which is 12kw.