sakelsey, this was extensively tested before release. The reason why problems occur with old files is that the internal parametrization was improved (it uses more information now). This was required for smooth walking with new content. Under certain circumstances, there can be conflicts, but we can't possibly guess all the different runtime structures out there to take them into account. For most people, the Walk Designer works out of the box, for those who are experiencing conflicts, we're trying to provide help (i.e. when you have custom made windows in your car, we can't necessarily deal with that in advance). OK, now for a quick fix on custom walk designer content: 1. open up the pz2 in a text editor. 2. search for the line 'thighLength' in the pz2 of your pose (should be right at the beginning, around line 10). 3. Add the missing data in new lines after the line located above: For Victoria 2: feetDistance 0.042183 hipHeight 0.393000 For Vicki P4: feetDistance 0.043000 hipHeight 0.396901 Do not add anything besides the feetDistance and hipHeight parms, here's an example: { version { number 5 } clearFigureKeys 30 thighLength 0.175231 feetDistance 0.0652754 hipHeight 0.408788 ... 4. Once you've done that, do the procedure described in post #6 again and let me know if it works this time.