I downloaded and installed the wallet for mac os and created an account where I stored some musicoins I mined. I successfully transfered musicoins to a friend's account and since then the wallet no longer syncs. The screen is empty. The accounts no longer appear and the sync is apparently disabled.
Any idea why this happens? I closed and launched the application several times.
Probably your computer clock is not synchronised. You need to do a time sync with an internet ntp. No idea how you do it on mac. Ot try to open a new account, or try to import your other account again. Check if there is your wallet file in the keystore. Menu: Manually backup. @Nicholas-O-Cuilleanain