It appears they're having software problems...
according to this source.
Russia was forced Saturday to once again postpone the test-launch of a new generation rocket after new defects were discovered in its software, Russian news agency reports said.
The Soyuz-2 rocket was left stranded for the second time at the Plesetsk space center in northwestern Russia, news reports said, delivering a new blow to Russia's cash-strapped space system.
With luck, they'll be able to fix the problem soon. I'm trying without much success to find the promised performance figures for this new version.