Error Updating

I get an error while trying to update:

An error occurred while uninstalling
session context was:(profile=profile, phase=org.eclipse.equinox.internal.p2.engine.phases.Uninstall, operand=[R]com.wireframesketcher.studio.jre.win32_root.win32.win32.x86 1.6.0.22 --> null, action=org.eclipse.equinox.internal.p2.touchpoint.natives.actions.CleanupzipAction).
Backup of file C:\a_Mine\WireframeSketcherStudio\jre\lib\rt.jar failed.
File that was copied to backup could not be deleted: C:\a_Mine\WireframeSketcherStudio\jre\lib\rt.jar

John, it's a known issue. You'll have to download and install the latest version manually.

Cool thanks that was the fix...