Reset and unlock works but 'change password' does not..

Reset and unlock works but 'change password' does not..

Hi,  We are doing our final testing before releasing the product to our users.  We have found that account unlocks and reset are working fine but the 'change password' function is not.  Users can login but when they enter their old password and then the new and hit return, there is no error message, it just show the blank form again.
 
Any ideas?
 
thanks
 
Jason

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