Can't start manually MozillaMaintenance Service

Can't manually start MozillaMaintenance Service

0.4.15-dev-707-g3745dad
Firefox 48

win32ss/user/ntuser/nonclient.c:1133) err: Wnd is active and not set active!
(dll/ntdll/ldr/ldrinit.c:1887) WARN: Accepting different LOAD_CONFIG size!
(sdk/lib/rtl/actctx.c:2727) unknown element ms_asmv3:trustInfo
(dll/ntdll/ldr/ldrinit.c:1683) LdrpInitializeProcessCompat: Found guid for winver 0x600 in manifest from C:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe
(base/system/services/database.c:624) ScmRemoveServiceImage() called

and.... nothing happens (service not started)