Java IO error - Spark will not start

Running Windows 7 64 bit. Using Spark 6.2.3. It was functional this morning and now when I start it, the UI never appears though it is visible in the task manager. If I get an IM the messaging window shows and is functional but that’s all. I updated to Java 1.7.0_11 this morning - using all default settings. The error log says:

Jan 16, 2013 10:41:34 AM org.jivesoftware.spark.util.log.Log error

SEVERE: Error saving settings.

java.io.FileNotFoundException: C:\Users\jwhite\AppData\Roaming\Spark\spark.properties (The requested operation cannot be performed on a file with a user-mapped section open)

at java.io.FileOutputStream.open(Native Method)

at java.io.FileOutputStream.(Unknown Source)

at java.io.FileOutputStream.(Unknown Source)

at org.jivesoftware.sparkimpl.settings.local.SettingsManager.saveSettings(Settings Manager.java:84)

at org.jivesoftware.spark.ui.ContactList.showEmptyGroups(ContactList.java:2032)

at org.jivesoftware.spark.ui.ContactList.addContactGroup(ContactList.java:1145)

at org.jivesoftware.spark.ui.ContactList.buildContactList(ContactList.java:602)

at org.jivesoftware.spark.ui.ContactList.loadContactList(ContactList.java:1801)

at org.jivesoftware.spark.ui.ContactList.access$1900(ContactList.java:112)

at org.jivesoftware.spark.ui.ContactList$25$1.run(ContactList.java:1788)

at java.awt.event.InvocationEvent.dispatch(Unknown Source)

at java.awt.EventQueue.dispatchEvent(Unknown Source)

at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)

at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)

at java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.awt.EventDispatchThread.run(Unknown Source)

spark.properties does exist in the directory listed above. I booted and tried a reinstall - no change. Do you recognize the cause of this error? Thanks

You can try deleting your profile and starting with fresh one (history will be lost).

C:\Users\jwhite\AppData\Roaming\Spark folder

That did the trick - thank you!