Leg_3jnt_01 breaks on build

[hstromme]

good morning,
i am rigging a quadruped using two sets of leg_3jnt components.
occasionally, the ik on the front legs will break and bend the wrong way, as if the joints stretch sideways (although i have stretching turned off)
im using mgear 4.0.9.

if i delete the rig, reopen maya, and build the rig, it always builds correctly.

1. is this a known issue? whats the fix?
2. is there a way (in mgear or maya) to clear the cache as if youd re-open maya?

[chrislesage]

I’m not sure what the best thread is, but this has come up. It’s a limitation/bug of the springIK solver in Maya. You can get around it by luck, or by changing the solver in the guide settings.

Or if you read this thread, there are some other tricks you can explore by using multiple chains.

Hind Legs for quadraped don't align with guides created?

Hey Guys! I am trying to rig a Horse using the default template…I can make the guides just fine but when creating the rig, the joints for the back leg are placed always placed in the same bizzare postion despite me changing orientation of the guides…any idea how I can do this correctly? [horse problem]