The complete error is:
An AJAX HTTP request terminated abnormally. Debugging information follows. Path: /batch?id=22&op=do StatusText: ResponseText: ReadyState: 4
I'm using Feeds to migrate from wordpress using the WXR. I'm using the last Feeds, Feeds XPath Parser, Feeds Tamper, Media and Media Feeds.
No more errors in logs or in the screen.
About 80% of the content is imported...maybe there are some content with something unespected? If i load the WXR in my browser hasn't any XML errors.