Level 6
After installing Windows Update KB3057839 Sandboxie started shoving problem with Clipboard.

SBIE2205 Service not implemented: CloseClipboard C0000058

It has probably something to do with recent attack on Kaspersky network and exploit used in that attack that triggered this KB3057839 update. Workaround is to uninstall this update but that puts your PC at risk from the exploit.

I'm waiting for sandboxie update.


Level 7
In the meantime you can set hide "SBIE2205 Service not implemented: CloseClipboard C0000058" message. Guess you don't want that nagging you.