The first error means you need to clear your activations.
Log into the download center to click the Reset Activation link.
the second error message usually happens if you start the CSAS Form Builder wizard from the Preset manager.
Make sure you are using the WebAssist -> Forms -> Create New Form access point to start the form builder wizard.
if you continue to have more problems, please provide additional details such as version of form builder that is installed, versions of other extensions that are installed, and your OS.