Eclipse was running fine last night, but this morning I tried starting it up and I came upon this error:

Here's the log

!SESSION 2010-04-07 17:58:37.208 -----------------------------------------------
eclipse.buildId=I20080617-2000
java.version=1.6.0_13
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments:  -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.osgi 4 0 2010-04-07 17:58:37.457
!MESSAGE Startup error
!STACK 1
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at org.eclipse.osgi.storagemanager.StorageManager.updateTable(StorageManager.java:512)
at org.eclipse.osgi.storagemanager.StorageManager.open(StorageManager.java:694)
at org.eclipse.osgi.internal.baseadaptor.BaseStorage.initFileManager(BaseStorage.java:208)
at org.eclipse.osgi.internal.baseadaptor.BaseStorage.initialize(BaseStorage.java:142)
at org.eclipse.osgi.baseadaptor.BaseAdaptor.initializeStorage(BaseAdaptor.java:124)
at org.eclipse.osgi.framework.internal.core.Framework.initialize(Framework.java:180)
at org.eclipse.osgi.framework.internal.core.Framework.<init>(Framework.java:152)
at org.eclipse.osgi.framework.internal.core.OSGi.createFramework(OSGi.java:90)
at org.eclipse.osgi.framework.internal.core.OSGi.<init>(OSGi.java:31)
at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:286)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:175)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)

Any help? I really need this up and running, and reinstalling and resetting all of my plugins and settings just isn't an option at the moment.