Here is my way to resolve "
Error reloading block database. Do you want to rebuild the block database now?" when starting mac client(it will always failed when you click yes and quit when no). Hope its useful for someone in the same situation.
Before you take any action to fix the problem,
BACKUP YOUR WALLET!
1. start the client with command line" ProtoShares-Qt -reindex".
2. after reindexing, "no block source" for 1 hour, so i found some node from this thread(
https://bitsharestalk.org/index.php?topic=355.0).
its useful:help->debug->console and input commands:
addnode 61.238.157.8 add
addnode 54.254.192.95 add
addnode 54.207.21.146 add
addnode 54.206.30.227 add
addnode 54.219.164.14 add
addnode 146.185.172.136 add
addnode 162.243.14.13 add
addnode 5.9.24.81 add
addnode 23.92.25.118 add