I've seen that problem too but I haven't had it shut the hydraulics down.
Normally when I get a "hitch capture" I am able to clear it out by using the lever to control the 3-point and move it as if I was raising/lowering and this has cleared the capture fault and everything worked fine.
I also get one that says "pto capture" and it goes away by hitting a button on the console on the right forward cab pillar that either says enter/reset/clear.. honestly I can't remember off hand what it says but I know it looking at it.
Nest time I'm in the 230 I'll let ya know, but it may be a while as we can't plant nothing, work any dirt and if there is a harvest it will probably be then before I am in it other than to move it maybe.
I think it is more of a computer error than a physical problem as I have got the hitch capture and pto capture since it was new and the MX285, the 8950 and I think while the farmer I work for had the 7150 it did it too.