Post 12.5 Upgrade Exception - Renaming domain hMailproviderw.dll

[PeteSDG]

Hi All,

After upgrading to 12.5 we are now faced with this problem when renaming the primary domain of a subscription. (Domain names below changed for privacy)

hMailServer is not installed (no mail server is installed, IIS SMTP only)
OS ‪Microsoft Windows Server 2012 R2‬
Plesk version 12.5.30 Update #24, last updated at Mar 9, 2016 02:50 PM

[2016-03-11 13:55:50] ERR [1] D:\plesk\admin\bin\spammng --rename-domain "--old-name=olddomainname.co.uk" "--new-name=newdomainname.co.uk" failed with code 1.

stdout:
Exception has been thrown by the target of an invocation.
The specified module could not be found. (Error code 126) at LoadLibrary(D:\plesk\admin\bin\hMailproviderw.dll)
at (VLibrary::load line 143)
at (MailProviderProxy::MailProviderProxy::MailProviderProxy line 150)


stderr:

[2016-03-11 13:55:53] ERR [panel] spammng failed: Exception has been thrown by the target of an invocation.
The specified module could not be found. (Error code 126) at LoadLibrary(D:\plesk\admin\bin\hMailproviderw.dll)
at (VLibrary::load line 143)
at (MailProviderProxy::MailProviderProxy::MailProviderProxy line 150)

(Error code 1)