Hi, Rich

Not sure how you have your limits wired, Change the Active Low for all of the Home & Limit's should allow you to Reset. Just 1 Input Pin can do it if all SW's are wired NC and then in series to  each other. One end to Gnd. the other end to an Input Pin.

Chip

Chip,
This is exactly how I have the limits set (plus the estop).  All are wired in series.  All NC.  If I hit one of the limit switches (with my finger), all the LEDs light in the configuration window.  If I let go, they go out.  But it won't reset.  It says "external estop requested" and scrolls "press reset...emergency mode active".
Here is the port 1 pin state in the configuration window (x=on, o=off):
ooo*********oxoooo
oooooooooooo

If I hit the limit switch (capital X comes on):
ooo*********Xxoooo
oooooooooooo

Settings page and Enable Auto Limits Override.
Hood

Chip,
That didn't show well.
Try these screan shots:

Auto limit override is enabled.
The before shot"

Just reading again, how do you have the E-Stop wired?
Hood

Can you attach your xml please and I will see what happens here with it, often easier to catch something that way.
Hood

attached file

Using limit switches as estop.

All seems to be working fine here but I am just simulating the switches. Is there a chance that you have noise or a switch thats not closing correctly?
Hood