So I recently got the uograded version Bryce 6.1, and when I tried to install it, it asked me if I wanted to uninstall version 6.0.  I did this, and for some reason it failed to install.  Now, I decided that in the meantime while I tried to figure this out I would go back to version 5.5 but now it gives me an appliacation error every time I try to use it.  I didn't tell the computer to uninstall version 5.5, just version 6, but for some I can't use any versions now.  So I tried to reinstall version 5.5 but I get the same application error.  What I think I did was, when I uninstalled version 6 I uninstalled a shared file of some sort.
Anyway, the application error # is 0xc015002.  If anyone has had this problem before and knows a way to fix it please help.  Otherwise I'll have to hire somebody to come and fix athe problem.
Thanks