[photran] Eclipse won't start anymore

["William Morgan" <therealbrewer@xxxxxxxxx>]

I've been using Photran for a few months on Linux with
the Intel compiler. Suddenly I can't get Eclipse to start anymore. The
splash shows up, then i get a "check the log" error.

The log file is pretty long. This is the output of 'egrep -A 2 "Caused by:|Exception:" /usr/lib/eclipse/configuration

/1190397100627.log':

------------------------------------------------------------------------------------
org.osgi.framework.BundleException: The activator org.eclipse.ui.internal.WorkbenchPlugin for bundle org.eclipse.ui.workbench is invalid
        at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:141)        at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java :962)
--
Caused by: java.lang.NoClassDefFoundError: org/eclipse/swt/SWTError
        at java.lang.Class.getDeclaredConstructors0(Native Method)
        at java.lang.Class.privateGetDeclaredConstructors(Class.java :2389)
--
org.osgi.framework.BundleException: The activator org.eclipse.ui.internal.ide.IDEWorkbenchPlugin for bundle org.eclipse.ui.ide is invalid
        at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator (AbstractBundle.java:141)
        at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:962)
--
Caused by: java.lang.NoClassDefFoundError: org/eclipse/ui/plugin/AbstractUIPlugin
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
--
org.eclipse.core.runtime.CoreException: Plug-in org.eclipse.ui.ide was unable to load class org.eclipse.ui.internal.ide.IDEApplication.
        at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:165)
        at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension (RegistryStrategyOSGI.java:149)
--
org.eclipse.core.runtime.CoreException[1]: java.lang.ClassNotFoundException: org.eclipse.ui.internal.ide.IDEApplication
        at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass (BundleLoader.java:402)
        at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)
------------------------------------------------------------------------------------

I'm no expert, but it looks like some kind of Java / class definition / bundle error. But the thing is, In fact, I don't even know what those are. I'm just writing numerical Fortran routines. No classes, objects, etc. I have no clue how to begin troubleshooting this. Any ideas?

Thanks!