This might do the trick:
Email Answer
Why do I get an 'uninstall component missing' error when I try to install or uninstall RealPlayer?
Question
Why do I get an 'uninstall component missing' error when I try to install or uninstall RealPlayer?
Answer
This document applies to:
- RealPlayer 10 and 10.5
- RealOne Player v2
When you try to install or uninstall RealPlayer or RealOne Player, if you get any kind of 'uninstall component missing' error message, even after performing a clean install of RealPlayer (uninstalling both RealPlayer and its folders), you'll need to remove the player twice, using a specific file called r1pclean. This process is also necessary if the RealPlayer doesn't open when you click on its icon.
Caution:: The r1pclean process can cause some problems. For example, using r1pclean will strip out all DRM plugins, and may require machine re-registration for secure file playback.
1. Open My Computer.
2. Double-click Local Disk (C

.
3. Double-click Program Files.
4. Double-click Real.
5. Double-click RealPlayer (or RealOne Player).
6. Double-click Setup.
7. Double-click .r1pclean.
8. Click Yes.
You should get the message 'Uninstaller component missing'.
9. Click OK.
10. Double-click .r1pclean again.
11. Click Yes.
This should remove the error message and allow you to reinstall the player from
www.real.com or the Downloads page
http://service.real.com/realplayer/downloads/.