Kesalahan menginstal plugin Perforce (P4WSAD) ke Zend Studio 7

Saya menjalankan Zend Studio build 20090901 Saya mencoba menginstal plugin Perforce tetapi saya menerima kesalahan ini: An error occurred while collecting items to be installed session context was:(profile=studioProfile, phase=org.eclipse.equinox.internal.provisional.p2.engine.phases.Collect,...