Outlook bombs and can not be rebuild

Latest version of Outlook 2011

Only POP accounts

OS 10.9.3

I have massive problems with Outlook 2011.  It bombs when I try to throw certain files away, is slow and has some other quirks.

I first tried to rebuild the database.  Result, I got over 150 'Untitled' folders and many of the ones that should be there are not.  So hours of work to sort this one if stuff did not get lost...

I tried exporting the data but this fails and it wants to rebuild. 

I tried Diana's tip here that helped in other cases, but no cigar.  It too creates endless 'Untitled' folders, and behaves funny.  One thing it does sometimes it goes in to a loop of wanting to rebuild every time I start it. etc. 

Any tips to solve this anybody?

Is it a option (I hate to think I need to do it this way) to copy all the emails in the different Outlook folders to disk (drag and drop) and copy them back in to a new identity (drag and drop)?  Anybody tried that?  Succes?

I hope there is some wisdom out there that solves his.  Thanks.