Do you have any security suites or program that might be blocking you from installing?
From the forums tivo com area I found this.
I was finally able to get this to work. Here is what I did.
1. Start registry editor as follows:
Start -> Run... -> regedit -> OK
2. Be extremely careful with Registry Editor. One false move can mess up your OS.
3. Expand +HKEY_LOCAL_MACHINE
4. Expand +Software
5. Right click on Tivo -> Permissions...
6. For each user select the "Allow" "Full Control" box.
If this does not work you might want to re-install 2.4a and try the above steps again.
From the forums tivo com area I found this.
I was finally able to get this to work. Here is what I did.
1. Start registry editor as follows:
Start -> Run... -> regedit -> OK
2. Be extremely careful with Registry Editor. One false move can mess up your OS.
3. Expand +HKEY_LOCAL_MACHINE
4. Expand +Software
5. Right click on Tivo -> Permissions...
6. For each user select the "Allow" "Full Control" box.
If this does not work you might want to re-install 2.4a and try the above steps again.