You question is a little off putting but i find I perform the following steps. With one wierd thing that pees me off (i think its a bug, but its in both 10 and 11, so maybe i'm the bug. see bold point below)
1. File/New/"Create Nios Application and BSP from Template".
2. Select the sopcinfo your doing this for.
3. Set your directiories for project storage name etc.
4. Select the type of project. e.g "blank". Click next.
5. because i use ucos i have to create the bsp manually. so i click create and a bsp is generated. 6. this newly generated bsp appears in the main window explorer (you can see it in background behind the new creation popups). but it does not allow me to select it as the bsp to use for this new project. 7. I then have to cancel this new project window and then select File/New/"Create Nios Application".
8. I then point this new application to the BSP i created before.
So i know this works, but its wierd. I suppose i could just create them both singularly with doing the 'start the both creation, make the bsp, then cancel' steps.
But shouldn't the create two at a time work?!
You can follow my method until someone smarter en-lightens us both.