Google has discontinued the availability of their SOAP API servers, and their Ajax API method are far too buggy for this particular tool. To see why the AIT tool cannot use the newer Ajax API I'll reference this very old bug report. In short, estimatedResultCount has returned horribly erroneous data in the newer API since day one, and Google has apparently chosen the decision to ignore bug reports and not fix it. Since they've been ignoring those bug reports for the better part of 2 years, I wouldn't expect a fix at this point.
Sorry, but that's the end of AIT using Google. I'll consider migrating it to the Yahoo! API platform as soon as I can find some free time to build a Yahoo! version. Though technically Y! does not offer an allintitle operand at all, you can sort of get the same information from multiple intitle queries. Until that time, don't bother using this tool. It will not return any results.