I’ve released a new version to fix most of the most common errors reported about the previous version.
“Preview Top Lines” and the blacklist editor screen are now once again working. There is better handling of certain SASL login failures, as well as fixes for memory access crashes while creating or testing new accounts.
Known issue: Logging into Gmail via IMAP with SASL (or Auto) authentication mode may not succeed. Workaround: On the accounts tab, press “Advanced >>” to show the advanced account options, and change “Authentication” to “Password”. This will be fixed in a future version.