error message each time when try to saving attachment

NULL

Can you post here the error message?

On russian: “Вложение не может быть загружено”, it means “Attachment can’t be loaded”, . Also, eM Client doesn’t load doc-files by MS Office, zip and rar-files. Other attachments (txt-files, for example) are loaded properly.

Log entry:

13:04:22 jazzrabbit@mail.ru [IMAP] Загрузка части сообщения…
13:04:24 jazzrabbit@mail.ru [IMAP] Bad chunk of 5.02.12.rar: ContentLength(2692794), ChunkSize(65536), Offset(0), BytesLength(2692792)
13:04:24 jazzrabbit@mail.ru [IMAP] Bad chunk of 5.02.12.rar: ContentLength(2692794), ChunkSize(65536), Offset(0), BytesLength(2692792): Завершено

Does it happen to all your emails with attachments?

Yes, it is.

In that case please send us your full IMAP log - go to menu Tools->Settings->Advanced->Logging and check “IMAP” under the problematic account. Then restart eM Client, try to simulate the issue and send us (with reference to this topic) the logs using the same logging settings window. Thank you.