Hi, i have not been able to get the addon working with any animations. is there something specific to do when using the addon ? used bledner 3.4.1 as well as 3.2 and 3.1 and still gives me erroers.
Mine worked with 3.4 and 3.2. You might want to test it with different models. You can download one (e.g. Amy) from Mixamo for free. This one has good rig so might be helpful for pin pointing the issue.