This problem was reported on IRC.
It seems like the ApacheDS Core module has a lot of imports on interceptors modules and those modules are not part of the distribution.
Here's the log from the user:
!MESSAGE Missing requirement: ApacheDS Core 2.0.0.M11 (org.apache.directory.server.core 2.0.0.M11) requires 'package org.apache.directory.server.core.admin [2.0.0,3.0.0)' but it could not be found
|Field||Original Value||New Value|
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Resolution||Fixed [ 1 ]|
|Fix Version/s||2.0.0 [ 12314306 ]|
|Comment||[ Could you please put working version onto update site, then. It is impossible to perform install Studio, nor update because of this issue. ]|