Comment 43 for bug 183136

Still not fixed for me; have tried all index and folder removes as suggested starting with bug331381. Has happened twice, situation is: I have a POP server (cloud) and IMAP server (local). I use IMAP on storage machine to off load old mail from local computer. I only use it 2x / year, File/preferences/enable Imap server. This issue happens while moving blocks of files to the IMAP server *and* if evo decides to automatically get mail from POP. POP may finish, but IMAP stalls at some percentage of moving files, and the error messages are forever with me. First time, I did fix it by removing folders.db in local. Should I be removing folders|Inbox|Sent .ibex, libx.data or others, all at the same time? What about the .cmeta files? What about folder.db in the POP and IMAP folders?