1> From the homepage, select the "Tickets" tab and click on a ticket for a "404 - File or directory not found" - NB: I removed the files you listed as removable in your v7.5 notes so it is possible i have done something silly there...
2> When creating a new ticket as a user, you click on "File Ticket" but nothing appears to happen. In actual fact, the ticket HAS been filed. It is not then visible in your screen until you refresh the page too.
3> Updating a ticket as an admin doesn't seem to work - the window pops up, but nothing is written back on clicking okay.
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I was having all three of the above problems similar to Matt, Nick was spot on with replacing the default.aspx page to fix 1 but I am still having issues identical to 2 and 3, did you ever get this working properly on your setup Matt?
Everything else I am using is working perfectly. Massive thanks.
Andy