i am getting this error
Unexpected error encountered while preparing for the operation.
org.eclipse.core.runtime.AssertionFailException
and in the detail window
Unexpected error encountered while preparing for the operation.
null argument:
when i am try to update from this site http://mantis.faratasystems.com/downloads/update/site.xml
i am running eclipse 3.4.1 and flex builder as a plugin how can i correct this error and install this plugin (Fx2Ant)
Helpful as @Aaron's suggestion is, it is a bit tedious. I tried it out. In my case the copied plugins just wouldn't show up in the UI. Correcting the file permissions didn't help either and I gave up. Frustrated, I looked around for other resolutions to this bug and found one on the Eclipse wiki that can help you replace p2 with the original Update manager in Ganymede. I tried it out and it works. There is also an automated script available for download that does the same. I think this is a good solution till the issues with p2 get resolved.
You can read more about how to do this here.
Note: Works only for 3.4.x. It says that it will not work with 3.5 since p2 is tightly coupled with other components of 3.5.
For me, the new plugin installer "p2" gets often into an inconsistent state. My solution is to have three Eclipse installs: A work installation, a template and one "install". When I need to install some plugin, I delete the "install", copy it fresh from "template" and then do the install in there.
After the install, I copy the new files under "plugins" and "features" to my work installation into the directory eclipse/dropins/ + name of the plugin. See my blog for details.
