The designs should also be on the cd that came with your qbot. Reformat your sd card and recopy the designs to it. What version is your Qbot? Check the Qbot website:
http://www.myqbot.com
for information on upgrading. You probably have an older version...there is an upgrade to 1.31 I think...it's not the newest...but fixes some flaws, which your software may have.
Upgrading to 2.7 or 2.9 for a fee would be a good idea also...bit of a cost (200.00 usd I think or more)...but I have 2.7 & it's great!