Please try the following:
Click anywhere on the open desktop so that the Finder menus are displayed at the top of the screen
Click the Go menu
Click Connect to Server
Enter the following:
smb://Time Capsule IP Address**
Click Connect
Enter the administrator password for the Time Capsule
Click Connect
Now double-click on the sparsebundle file to open it and see if the files are now displayed correctly
** For example, if your Time Capsule IP address was 10.0.1.10, then you would enter smb://10.0.1.10
If you do not know what the IP address of Time Capsule might be, open AirPort Utility and click on the picture of the Time Capsule. Look for the LAN IP address.