Hm okay according to your log my workaround seems to work but it is needed every time which really confuses me as this causes a lot of unnecessary http requests.
If Jiaz finds time he may look at this log again but for now as long as it's working it's okay.
-psp-
EDIT
Regarding the filenames:
They are like they are as users have suggested them.
Here are your options:
1. Go to Settings -> Plugins -> e-henatai -> Check "Prefer original filename"
or:
2.
You can remove the path length limit (not recommended).