is their already a solutions about the wallet sync?
the file still doesn't work.

edit: i have deleted all the files of the wallet, i downloaded it again, and i get the message " error loading blkindex.dat"
even without using the bootstrap.dat file
i'm using the mac wallet.

I had the same ur problem. Don't delete blk0001.dat. If you delete this file, that error message will appear. You can reinstall the wallet by deleting everything in your Roam folder data wallet.dat file. Copy the bootstrap you download in that folder and Run the app.  It takes about 3mins to sync