Hey there,
I am really sorry for the delay of this reply as it is a weekend for us here.
That was strange, by right you shouldn't getting this error, can you try download latest installer from
https://stackideas.com/dashboard then upload this installer through your Joomla backend installer page and see how it goes?
If the issue still persists, can you update your Joomla backend and FTP access at
http://stackideas.com/dashboard/site so we can better have a check?