iTunes Connect: Can't save app information after uploading new binary

I'm trying to upload an iOS app for review using Xcode's Organizer and I've encountered two problems:

Case 1

Binary uploads but when I press Submit for Review iTunes Connect gives the error:

Your app information could not be saved. Try again. If the problem persists, contact us.

Case 2

After getting the first error message, I tried uploading a new binary, but got the following error message in Organizer:

ERROR ITMS-9000: "Redundant Binary Upload. There already exists a binary upload with build version '1.1' for train '1.1'"

I tried uploading other binaries changing the version number but still I can't get my app to go in the review state. I also can't see any way to delete old binaries that were uploaded.

Another observation: My app should be around 30MB but when I look at the uploaded binary it is only 1.46MB. I guess there might be something wrong from the binary but I've built it using the same technique several times before and never had any issues.

Any ideas?

For me, I was filling out the form in Safari and getting the error. I logged out, then switched to Chrome and signed in. This fixed the error, and I was able to submit.

Sign out and Sign In again should work as it worked for me!

I solved this by increasing the number in Build (Select the Target, then Xcode -> General -> Build, see picture) by adding .1 so the build was 3.75 -> 3.75.1. But only for the Build, the Version is still 3.75 and also appears like that in iTunesConnect.

Then the new binary uploaded and I could select it for review. In the picture below you may see the old and the new binary listed in iTunesConnect. Then I finally just had to select the new binary and submit for review.

Open web inspector, you will find that Apple said: We've got a server error ... 500 That's the real reason. :)

Update:

Inspired by @phantom, I try to use dotjs to run a javascript script to auto click submit button per 15 seconds, but still get the 500 error all the time.

@Geaka's answer is working for me. Because my product name is Chinese，I change my product name to english(DO NOT include whitespace! It maybe causes another error on building path error.)

I debug the apple website and find a js script named submit_for_review_cntrl.js which controls the whole submit progress. From line 123 to line 129(formatted by {} button in chrome) that setting the http headers, there is a field named X-Original-Filename, the value is given by $scope.addCcatFileToJson method in line 138, the param of this method is given by ajax callback, i guess there's a bug for encoding the product name field of the back-end code.