MPS can't find some jars

I've installed MPS Build #470, JDK 5 (1.5.0_05), IntelliJ IDEA 7.0.1.

When I refresh (Reload All) my project in MPS, I have these messages in Message Window:

Class path item doesn't exist C:\Program Files\JetBrains\MPS\lib\joda-time\joda-time-1.4.jar

Class path item doesn't exist C:\Program Files\JetBrains\MPS\lib\junit4\junit-4.1.jar

Really I can't find these jars on my machine, Is it serious ? :-)