I have a serious sync problem. I have bought unlimited space to merge all my library. My computer has 16 GB Ram ans i5. My the Debug ID is D41518077 an report ID is 1296155339. The problem occurs for year. I have written lots of time to here. It does not solve, I will cancel my unlimited account and start to use EndNote. Because Zotere has a serious sync problem and I do not have time to get over this problem. It is waste of time.