The error says "The assembly may have out-of-data links, therefore cannot be solved. Try using the Update All Links tool before adding a new constraint."
After I got this error, I cliked on "Update All Links" from Tool ribon, but still I have this problem.
I don't have any ideas how to solve this error. Please help me...
It's hard to say what went wrong just by looking at the error message. Does it still give the same error if you activate all the parts in the assembly before running Update All Links?