Left 4 Dead 2 - Update

Custom Campaign select screen: - Show all installed custom campaigns, not just the ones that support the current mode. - Disable list items for campaigns that don't support the current mode, and sort them to the bottom of the list. - Fixed some uninitialized text fields when no campaign is selected. - Moved an informational string so it doesn't overlap the campaign list.

Workshop Publishing Tool: - Removed the file count from the download progress bar to avoid confusion when stale meta-data indicates there are more files than actually exist. - Don't show the download progress bar if no valid files were found. - Fixed the "Failed to write file chunk…" error message not correctly showing the number of bytes written.