Installer reports the exact message mysql outputs when a problem occurs during initial connection
PHP error logging is now optional and turned off by default. Also, one of the errors that was being logged frequently was removed.
Off by default now but can be turned on by setting IW_LOG_PHP_ERRORS to true in share.config.php
The email address would not be remembered if the initial form submit failed for some reason.
When a doc add fails for some reason, the form is now redisplayed in the way that it was just before submission so you don't have to reupload the file or reenter any data
It used to be that group administrators could add a document that would give permissions for any domain to see.
There was no ill-effects caused by this problem but it was a nuisance for those with IW_DEBUG enabled.
Even when group mail was sent you'd get a blank screen except for the notification message
Typing in the email and pressing the Email button failed completely whether or not email was setup correctly.
No change was made at all to document permissions so this wouldn't have caused a security issue.
This would also have affected documents with permissions assigned for that group.