Installing Iguana requires Local Administrator access for the machine where it is being installed or upgraded on a Windows machine. We strongly recommend that you logon as a local administrator when you are installing/upgrading Iguana.
Note: It is technically possible to install Iguana when you are logged on as a non-admin user — but you will be asked to supply the credentials of a local administrator before you can proceed.
In view of this it is much simpler to logon using the admin user.
If you are not logged on as a local administrator when installing or upgrading you will be asked to supply credentials for a local administrator before you can proceed.
This is primarily because the install program needs permission to update the registry (to add settings for Chameleon). There may also be other restrictions that your Administrator has placed on your account (for example you may not be able to create a directory/file in the Windows program directory).
We strongly recommend logging on as a local administrator when you install/upgrade Iguana. Speak to your System Administrator if you do not have access to an administrative user.
Technically it is possible to install as a non-admin user and supply the administrator credentials when requested. However we do not recommend this, and we do not guarantee this method will work.
Prevention is simple — always logon as a local administrator when installing/upgrading Iguana on Windows.