MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I am glad it worked out for you. I designed it in the compressed state so there wasn't too much stress on the abs. If was printed 'open' by the time the plastic bends around into the fully locked position it has undergone a pretty severe bend.
I left enough space for it to be printed without touching. Just bend back the tab and it should come out.