Crystal 11 Install message - 'Cannot get a valid key code'

Question

On install of Crystal 11 get the message above, although the valid key code is filled in automatically on the install process.  On launch, the app always asks for a key code, and when one is entered it proceeds as usual - but always asks again next time. Then, when the code is entered, I get the 'invalid or expired' message that others have noted. 
The product is registered - it notes the product has already been registered when I try again but I get the following message back, always with same number:  Thank you for registering Crystal Reports Developer XI.. Your Registration number is 8414648993
Following various clues on this forum I uninstalled/reinstalled the software.  Version 10 is also on this machine, as well as 8.5, though I think this is not unique (we have certain apps that require one or another, so developers use several versions).  I did not delete the registry keys for Crystal 11 because they weren't there, just generically Crystal ones, but otherwise uninstall and folder deletions went OK.  Reinstall had the exact same problems.
Can anyone help?  No sense venting on people who are trying to be helpful, but I would naturally just like the stuff to install OK if I have a valid code on the install sleeve, as certainly seems to be the case.  That, or a place where I can plug in the error message and get a nice well-documented procedure to try, rather than a thread with clues - or where the solution is taken offline.
Thanks,
Larry R.

Answer 1

Hi Larry,
This type of issue normally occurs when the rights on the following regirty keys are insufficient: -
HKEY_CURRENT_USER and HKEY_LOCAL_MACHINE.
Specifically, the rights on the software folder must be full control. (Right click on the folder and select permissions).
Once you have provided full control, re-install the product once and everything should work fine.
Please let us know if this helps.
Cheers!