Error when opening Launchbox form desktop of Big Box

[Jools Gooch]

This is the error received after upgrading from Launchbox to Big Box.

The process cannot access the file 'C:\Users\jools\LaunchBox\LBThemes\Default\Images\Overlay.png' because it is being used by another process.

App: LaunchBox
Version: 13.6
Theme: NOT SET
Type: System.IO.IOException
Site: Microsoft.Win32.SafeHandles.SafeFileHandle CreateFile(System.String, System.IO.FileMode, System.IO.FileAccess, System.IO.FileShare, System.IO.FileOptions)
Source: System.Private.CoreLib

at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options)
at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
at System.IO.Strategies.FileStreamHelpers.ChooseStrategyCore(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
at System.IO.Strategies.FileStreamHelpers.ChooseStrategy(FileStream fileStream, String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, Int64 preallocationSize)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean useAsync)
at System.IO.Compression.ZipFileExtensions.ExtractToFile(ZipArchiveEntry source, String destinationFileName, Boolean overwrite)
at System.IO.Compression.ZipFileExtensions.ExtractRelativeToDirectory(ZipArchiveEntry source, String destinationDirectoryName, Boolean overwrite)
at System.IO.Compression.ZipFileExtensions.ExtractToDirectory(ZipArchive source, String destinationDirectoryName, Boolean overwriteFiles)
at Unbroken.LaunchBox.Windows.Desktop.App.PushMetaIterator(Object , Object , Boolean )
at Unbroken.LaunchBox.Windows.Desktop.App..ctor()
at Unbroken.LaunchBox.Windows.Desktop.Program.Main(String[] args)

Recent Log:

11:21:05 Exception