Call Recorder for Skype will need to be re-installed after Skype auto-updates itself.
You will see this message:
Click Install to open up the Call Recorder installer and follow the prompts to re-install.
If you do not see this message, and you do not see the Call Recorder window in Skype, download the latest full version of the Call Recorder installer from the Customer Center link in the email that you received upon purchasing.
If you need the link re-sent, request a new email here.