Thank you for reporting this. Could you elaborate on what happened before you encountered the critical error? Did you receive any messages indicating the cause of the error? Any additional information would be really helpful in pinpointing the source of the issue. Thank you.
Just released a new version (4.3.5) that fixed some critical errors. Please update to the latest version. If you are still experiencing critical error issues, please provide additional information. If you are using any caching system, please make sure to clear the cache, including your web browser’s cache.