Just upgraded from 4.7.3 to 4.7.4 and got a whole raft of errors.
I think I tracked down the only real problems, related to the contacts module. It looks very much like drupal and this module are using the same table name. Perhaps all module tables should have a prefix in the future to differentiate them from core?
If anyone has time, please take a look at my errors and let me know if any of them are something I really need to worry about. I did go manually drop and recreate the contact table.
If you get the red Validation Error Text after upgrading to 4.7.4 the conflict is with the old versions of the modules that come with drupal. The simple solution is to copy the new modules into your modules directory and just replace the ones that come with drupal. This will fix the error.
I've just upgraded from 4.7.3 (actually 4.7.2 with the single security fix applied) to 4.7.4, and discovered a problem with the custom profile fields I had set up.
As an example - I had a "Location" field, which users completed with their, erm, location. Clicking on that location on their user page would then go to a "Other members from location" page, listing that user and any others with the same location.
After upgrading to Drupal 4.7.4 the Google Analytics code at Google showed no stats for the website. Google reported that the Analytics code is being received, although no stats were present. The Drupal site statistics had confirmed that there were visitors for the last three days.
I updated my site from 4.7.3 to 4.7.4. All of a sudden, I was having problems with my themes! Not sure what happened.
In a nut shell, I uninstalled and reinstalled several times. Neither installed 4.7.3 first then updated to 4.7.4, or straight off 4.7.4, my admin/themes only showed 1 theme, even tho I have like 5 phptemplate themes in the folder.