Typically, this error occurs if a design contains any broken element or if there is a general bug in the VistaCreate system. Users are recommended to try taking the following steps:
- refresh the page or try to clean out the cache and cookies in the "Settings" tab of your browser;
- switch browsers and use another browser, updated to the last available version (Chrome, Safari, Firefox, Opera, etc.);
- contact VistaCreate support team via "Help Center" on the user account