This happened on my other 7.7.1 -> 7.7.3 upgrade and I didn't report it, figuring it might have been a permissions issue. But this time I explicitly set the entire forum structure to wide open before I began, just to see.
I get to the language step. I tell it to update my language files. It gets to the next page and says:
english language files have been updated.
It just sits there with no button or option. I let it sit for a half hour while I worked on other things.
URL is /forum/install/upgrade.php
So then I hit "back" to the page with all the language string windows. I tell it again to update my language files.
Same thing (definition of insanity). It just gives me that one sentence with a lowercase E in English (ahem) and sits there.
So I click BACK and tell it I've updated them by hand.
Now it gives me errors on this set. I have to manually update these myself.
String not updated: $ubbt_lang['BOX_NAME'] = "Island Name";
String not updated: $ubbt_lang['POST_ISLAND_ID'] = "#";
String not updated: $ubbt_lang['ISLAND_TITLE'] = "Island Name";
String not updated: $ubbt_lang['shoutbox'] = "ShoutChat Box";
String not updated: $ubbt_lang['ILL_PASS'] = "The password you entered contains illegal characters. Please use only alphanumeric characters (A-Z, 0-9).";
String not updated: $ubbt_lang['IS_RESERVED'] = "The Display Name you have chosen is already registered. Please choose a different Display Name.";
String not updated: $ubbt_lang['D_NOTE'] = "The Group Editor allows your manage the various user groups on your forum. Filling in the \"Posts\" field will automatically add users to that group once they reach the designated Post Count. Enter 0 to disable this feature per group.";
String not updated: $ubbt_lang['DISABLE_VIEWPORT_1'] = "This will disable the viewport. The viewport element allows your forums to conform to devices with smaller screens, such as smartphones and tablets.
Checking this is recommended with any of the following scenarios:
• If your forums have non-responsive layout elements, such as in the header, footer, islands.
• If you haven't got the time to convert your design to responsive yet.
• If you have no desire to use the responsive layout of UBB.threads.";
String not updated: $ubbt_lang['TOO_LONG'] = "This private topic has reached it's maximum length of %%TOTAL%% replies.
You cannot add any more replies to this private topic at your current member level.";
String not updated: $ubbt_lang['NOPRIVS'] = "Private Topics are disabled for your current member level.
Creating useful topics/replies in the forums will increase your member level and allow you to create new Private Topics.";
String not updated: $ubbt_lang['SEND_PM'] = "Private Message";
String not updated: $ubbt_lang['VIEW_HOME'] = "Homepage";
String not updated: $ubbt_lang['VIEW_POSTS'] = "Forum Posts";