[equinox-dev] Match problem when updating p2-ized product

[Torkild Ulvøy Resheim <torkild.ulvoy-resheim@xxxxxxxxx>]

I've got a product which consists of two of our features "com.atmel.avr32" and 
"com.atmel.avr32.doc". When attempting to upgrade an installation of this 
product using a p2 repository I always get this error message:

Cannot complete the request.  See the details.
AVR32 Studio IDE Core is already installed, so an update will be performed 
instead.
AVR32 Studio User Guide is already installed, so an update will be performed 
instead.
Cannot find a solution where both Match[requiredCapability: 
org.eclipse.equinox.p2.iu/com.atmel.avr32/[2.1.0.200809241313,2.1.0.200809241313]] 
and Match[requiredCapability: 
org.eclipse.equinox.p2.iu/com.atmel.avr32/[2.1.0.200809241305,2.1.0.200809241305]] 
can be satisfied.
....many more

For some reason the feature cannot be updated (to 2.1.0.200809241313) because 
the older version of the feature is required (2.1.0.200809241305)

There are no dependencies where the version is not specified so that should 
not be the case. When looking at the "com.atmel.avr32" feature part of the 
generated "contents.xml" (for the original installation) I find the following:

<required namespace='org.eclipse.equinox.p2.iu' 
name='com.atmel.avr32.managedbuilder.ui' range='[2.1.0,3.0.0)'/>
<required namespace='org.eclipse.equinox.p2.iu' 
name='com.atmel.avr32.managedbuilder.ui' 
range='[2.1.0.200809241305,2.1.0.200809241305]'/>

Any ideas on how to resolve the update issue?
-- 
Torkild Ulvøy Resheim
Senior Design Engineer, AVR Tools
Atmel Norway