Okay so today Blockchain.info was down and I desperately wanted to send a transaction. I have the json file wallet backup and tried to import it in Multibit but they dropped support for this it seems. I tried an old version where I could import but it got me errors.
is there any Client which supports these wallet backups?
Thanks
1st question - when blockchain.info was down today?
And the answer to your question is here :
"(...)You can also import blockchain.info wallet backup files by changing the file type in the 'File format' drop down combobox.(...)"
https://multibit.org/help_importingPrivateKeys.html