Apparently there may be an issue with Sage 100 ERP 2014 STANDARD edition where you receive the message ""Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.""
If you are trying to install STANDARD to a workstation (wksetup) that has 2013
According to a post in Sage City this may be due to a registry key being erroneously re-used and has been reported to Sage.
https://www.evernote.com/shard/s270/sh/4e03a1de-5a57-4604-8420-922715f1e477/d39d0367316f4b9241bc797b610a35f3