Error Dumping Frames to AVI

[Zenon]

I'm using Dolphin for TASing games and I got rev. 3.5-1344 to record movies without any desynchs, but it doesn't allow me to dump frames. I have a User/Dump/Frames folder, so I have no idea how to make it work. Older versions are dumping frames just fine, but there's one game that doesn't work with the older versions so I can't use them. Thanks in advance.