[wnm3]

Having imported a user library file into Helios, the location of the jar files was based on Windows (C:\...) and the user is on MAC. Unfortunately, they forgot to edit the userlibraries file before importing it. Now, the User Libraries dialog in Window / Preferences / Java / BuildPath / User Libaries fails to started ("An error has occurred when creating this preference page.") and shows the problem "Path for IClasspathEntry must be absolute: C:/..."

If anyone knows the file that is updated when a user imports user libraries so we can edit it and remove these errant references, or fix them that would be very helpful.

Thanks in advance for your help.

[wnm3]

It turns out this is a bug which I have reported here: https://bugs.eclipse.org/bugs/show_bug.cgi?id=346002

The constructor that loads the UserLibraryManager fails because an assertion tests the path while building the list of UserLibraries. Unfortunately, the data is stored in a serialized binary file so it is difficult to edit.

[wnm3]

It turns out the User Libraries are maintained in a text file, not a binary file. If you get into this situation where the User Library dialog is unable to display its content, shut down Eclipse, and then start in the workspace directory and navigate to edit the file:

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.jdt.core.prefs

and remove the offending "org.eclipse.jdt.core.userLibrary.MyLibTest=.. ." entry (or whatever your User Library name is).

Because the file begins with a period, Linux or MAC users will need to ensure they can find hidden files.

Thanks to the Eclipse team for providing the work around. The issue should be repaired in an upcoming version of Eclipse.

https://bugs.eclipse.org/bugs/show_bug.cgi?id=346002