Hello
I'm taking request in to fixing your custom animations for a limited time, just send me your download link to your custom animations and I will fix them.
If you want to fix them yourself you have to add the "TailScale" animation to your custom animations.
The way I do it is this:
You have to download the Ogre command line tools version 1.7 and use the OgreXMLConverter.exe to convert the .skeleton files in to a xml file.
You have to convert the original game animations and your custom ones in to xml format.
Then Open the xml files in a text editor.
In the original game animations copy the animation called "TailScale" and paste it in to your custom animations just after "Sulk", save it.
The custom animations you just edited you have to convert them back in to .skeleton using OgreXMLConverter.exe.
That's it.