When I try to install the AJDT (AspectJ Development Tools) via the ‘Software Updates’ page using the update link ‘http://download.eclipse.org/tools/ajdt/32/update’ in MyEclipse I get the following error:
Eclipse AspectJ Development Tools (1.4.1.200611230655) requires plug-in “org.eclipse.pde.core”.

The thing is, I cannot find the required plug-in for download anywere, and the last time I installed MyEclipse and AJDT (sometime late last year) this was not an issue. So, is this a RTFM or can you help me with the required plugin?
thanks
-Martin
My installation details:
*** Date:
den 20 april 2007 kl 12:03 CEST
** System properties:
OS=WindowsXP
OS version=5.1
Java version=1.5.0_08
*** MyEclipse details:
MyEclipse Enterprise Workbench
Version: 5.1.1 GA
Build id: 20070302-5.1.1-GA
*** Eclipse details:
MyEclipse Enterprise Workbench
Version: 5.1.1 GA
Build id: 20070302-5.1.1-GA
Eclipse Platform
Version: 3.2.2.r322_v20070119-RQghndJN8IM0MsK
Build id: M20070212-1330
Eclipse RCP
Version: 3.2.2.r322_v20070104-8pcviKVqd8J7C1U
Build id: M20070212-1330
Eclipse Java Development Tools
Version: 3.2.2.r322_v20070104-R4CR0Znkvtfjv9-
Build id: M20070212-1330
Eclipse Project SDK
Version: 3.2.2.r322_v20070104-dCGKm0Ln38lm-8s
Build id: M20070212-1330
Eclipse Graphical Editing Framework
Version: 3.2.2.v20070208
Build id: 20070208-1315
Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-launcher
C:\dev\eclipse\eclipse.exe
-name
Eclipse
-showsplash
600
-exitdata
814_74
-vm
C:\dev\jre\bin\javaw.exe