error while "resolving dependencies"

jiserte wrote on Tue Sep  2 20:08:10 MEST 2008:

i can't install epic on eclipse 3.4.
An message error appears while installer trying to resolve dependencies.
I tryed to install another version of epic and doesn't work, also i tryed
to remove and re-add the repository site.
the error message is below. Can anyone tell what is happening?


Cannot complete the request.  See the details.
  Cannot complete the request.  See the details.
  Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.5.1,0.5.1]]
and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.1.4,0.1.4]]
can be satisfied.
  Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.5.1,0.5.1]]
and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.1.4,0.1.4]]
can be satisfied.
  Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.5.1,0.5.1]]
and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.1.4,0.1.4]]
can be satisfied.
  Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.5.1,0.5.1]]
and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.1.4,0.1.4]]
can be satisfied.
  Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.5.1,0.5.1]]
and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.1.4,0.1.4]]
can be satisfied.
  Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.5.1,0.5.1]]
and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.epic.regexp/[0.1.4,0.1.4]]
can be satisfied.

jploski wrote on Tue Sep  2 22:06:46 MEST 2008:

It seems that the new p2 update manager of Eclipse can really mess up your
installation. 

Try an installation from sanitized initial conditions:
- remove $ECLIPSE_HOME/plugins/*epic*
- remove $ECLIPSE_HOME/features/*epic*
- remove the update sites
- remove lines with 'epic' from $ECLIPSE_HOME/configuration/org.eclipse.equinox.simpleconfigurator/bundles.info

If you're still running into problems after that, you can also try installing
using the old update manager which used to be standard prior to Eclipse
3.4. It can be re-enabled under Preferences/Capabilities. However, if do
it this way, you may have to add the relevant plugin entries for EPIC to
the bundles.info file manually. If the entries are missing, the old update
manager will complain about the org.epic.perleditor feature not being configured
properly. You will see messages such as "No plug-in: "org.epic.perleditor"
included at runtime" when you query the feature's status. Finally, if you
install using the old manager, the new p2 manager might remain unaware of
the changes. So it is advisable to retry with the new update manager after
the installation with the old one has succeeded.