Resumable Media Upload with the Google API Java Client library stops at 90% -

Resumable Media Upload with the Google API Java Client library stops at 90% -

i seek enable "resumable media upload" google api java client library;

http://code.google.com/p/google-api-java-client/wiki/mediaupload

but uploads stops every time between 90 en 100% ... know whats going wrong?

google-drive-sdk google-api-java-client