Error: zenDBSrv.exe

Error: zenDBSrv.exe

I have problem:
DBCLI:Error OpenConnection GetProjectInfo failed GUID:64ab51f3-29b1-4d13-b6c4-1f774de4b605! Please check is zenDBSrv.exe is running or is the Project existing?
DBCLI:Error OpenConnection GetProjectState Error GUID: 64ab51f3-29b1-4d13-b6c4-1f774de4b605 State: Undefine!

I can't restore projects with zenon.
The problem started after shut down unsuitable.
I have missed projects and works (variables)