When I add a new shape layer or want to edit an existing one, nothing is happening. I even don't see the dots where I'm clicking.
Maybe the problem is I deleted some layers (by opening the .qgs as a txt-file) as my project was collapsing by opening. I deleted three layers (maplayer and legendlayer, from start to end). Could there be some problem. The file is at https://dl.dropbox.com/u/83565282/AA_SR_Mendae.qgs
When I open a new project everything is fine.
Thanks a lot for all your help!!
I'm using QGIS 1.8.0 Lisboa