Issues with SpacePilot Pro

Have this problem many different times.  when i contacted 3dconnexion the forwarded me the instructions on doing a clean install...which is not just an uninstall....see below.

Try a clean install it sounds like a possible corrupted registry entry.

Full uninstall and reinstall process for Windows XP, Windows XP 64, Windows Vista 32 and Vista 64, Windows 7 64:

Before proceeding make sure they or their IT administrator are logged in with full admin privileges.

1) Download the latest driver from the 3DConnexion website and save it to an easy to access location such as the desktop.

2) Uninstall the current driver through the Add/Remove programs. Then make sure the 3DConnexion folder in C:\Program Files is deleted and purged from the Recycle Bin.

3) Navigate to C:/Documents and Settings/your profile/Application Data or C:/Documents and Settings/admin/Application Data/ and delete the 3DConnexion folder there and be sure that it is also purged from the Recycle Bin. Check both locations to be sure.

NOTE: on Vista machines the paths to the profiles will be found in C:/Users/your profile/AppData or C:/Users/admin/AppData/.

4) Under the 'Start' button and 'Run' type in 'regedit' and hit OK to bring up the Registry Editor. It is strongly recommended that a backup of the registry be made first by right clicking on the My Computer icon in the left panel of the Registry Editor and selecting 'export'. Title it something like Registry Backup and point it to an easy to access location like the desktop. Once the backup is complete there are 2 registry entries to remove:

Under the branches 'HKEY Current User' and 'HKEY Local Machine' and under each of their 'Software' folders delete the 3DConnexion folder found in each location (note: sometimes there might not be one under the Local Machine key folder).

5) Right-click on the C:\ drive and select Properties. On the General tab run the Cleanup and when prompted after the initial scan, check all items EXCEPT Compress Old Files.

6) Remove the device from the USB port if it is still plugged in and follow this by rebooting the computer.

7) To rule out installation conflicts with firewalls or antivirus software please disconnect from any local network if applicable (with most places, depending on how their network and licenses are managed you can physically unplug the network cable after logging back into Windows), disable any antivirus programs and turn off any local firewalls. The Windows firewall settings can be accessed from the Windows control panel. All of these items can be reconnected/turned back on after the driver is successfully installed.

8) Install the latest driver previously saved to the desktop

hope this works for you...works for me everytime