Hey Blain,
You see - this is a requirement. We need either mootools 1.2 or 1.3. I understand that being on joomla 1.5 is painful for this, but just in a month we will have joomla 2.5 which has 1.3(joomla 1.7 and 1.6 also have mootools 1.3). ( I have problems myself with extensions that run on mootools 1.1 but not on 1.3, but we all need to move on)
I consider this to be a problem of the past - most of the new websites are build on j1.7 - people that are running them have 0 problems with the extension.
Now my question here is - do you really want to use a library that is released 5 years ago - mootools 1.1?
Kind regards,
Daniel