Joint locked

[badcookie]

I have an IKRP solver on an elbow. The middle joint is now locked in a straight position, it won't allow me to rotate the joint manually or through the IK handle= i have to do it in the channel box, but when i move the IK the joint snaps back into the straight position. The problem appears to be in the joint, but when I delete the IK everything works properly.

I've checked all the usual spots for the source of the problem: set a preferred angle, checked to see if limits were set (they weren't) checked degrees of freedom, and recreated the IK.
The joint isn't duplicated, it doesn't have any history, and the transformations were frozen upon creation.
Any ideas why this is happening?

[gmask]

I've checked all the usual spots for the source of the problem: set a preferred angle, checked to see if limits were set (they weren't) checked degrees of freedom, and recreated the IK.

It still does this after rebuilding the IK???

g

[badcookie]

yeah thats why i think it is the joint, but it rotates normally when i delete the IK all together.
??

[gmask]

yeah thats why i think it is the joint, but it rotates normally when i delete the IK all together.
??

Oh you you mean you deleted the IK handle then of course you can rotate the joint and then when you reapply the IK handle you get the same locked joint problem.

Somebody else posted a message who was having the same problem and I actually got a copy of his scene and the only solution I could come up with was to delete the joints that were faulty then recreate the joints and then reapply the IK Handle.

I'll try to find his post again and see if anybody came up with a soltuion besides what I've described.

g

[gmask]

I founf the messages from the other person reporting the same problem and nobody came up with an easier solution that what I've suggested.

One thing I didn't try on his scene was to delete everything in the scene except for the relavent joints and save it as a Maya ASCII file. Then rebuild the joints and IK so that it works properly and then save it as a Maya ASCII file and then open the two files in a text editor and compare them.

Hopefully in doing this it would reveal some minor variation in the two files that would end up being the problem. From there you could edit the problem file and hopefully recover any work that you would have lost by having to rebuild the joints like binding and deformers.

If this sounds intimidating I'd like to give it a try as I don't have the other guys bad file handy to experiment on.

g