Invoices and Purchaser orders not sending, System.InvalidCastException error.

Every time we go to send an invoice or pruchase order the following comes up.

We have tried using new outlook as default, uninstalling both outlook and MYOB to no avail.

Also ocurrs if we change to a different company file (we have two companies)

Does anybody have a solution as this is a major headache.

below is the error mesage

Cheers

nathan.

AccountRight Application Error Report
=====================================
Application Version: 2020.1.23.5508
Application File Version: 2020.1.23.5508
Incident Id: 5a4f7900-b1e5-4cc6-9e33-35bfb704439a
Time: Wednesday, April 1, 2020 2:28:50 PM

Code:
System.InvalidCastException

Message:
Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface type 'Microsoft.Office.Interop.Outlook._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00063001-0000-0000-C000-000000000046}' failed due to the following error: Interface not registered (Exception from HRESULT: 0x80040155).

Stack Trace
----------------------------------------
1 : System.InvalidCastException
----------------------------------------
System.InvalidCastException: Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface type 'Microsoft.Office.Interop.Outlook._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00063001-0000-0000-C000-000000000046}' failed due to the following error: Interface not registered (Exception from HRESULT: 0x80040155).
at mscorlib!0x06004226!System.StubHelpers.StubHelpers.GetCOMIPFromRCW(Object objSrc, IntPtr pCPCMD, IntPtr& ppTarget, Boolean& pfNeedsRelease)
at Microsoft.Office.Interop.Outlook!0x06002365!Microsoft.Office.Interop.Outlook.ApplicationClass.CreateItem(OlItemType ItemType)
at Huxley.MsOffice.Integration!0x06000078!MYOB.Huxley.MsOffice.Integration.OutlookEmail.OutlookEmailProvider.SendMessage(String emailAddresses, String subject, String body, EmailResourceType resourceType, String documentNumber, IEnumerable`1 attachments) +0xf7
at Huxley.UI.Controllers!0x0600110b!MYOB.Huxley.UI.Controllers.Helpers.EmailHelper.SendEmail(String to, String subject, String body, String pdfFileName, EmailResourceType resourceType, FormTemplateDefinition formTemplateDefinition, FormPrintingParams formPrintingParams, IEnumerable`1 attachements, Nullable`1 entityUid, LayoutType layoutType, String documentNumber) +0xd0
at Huxley.UI.Controllers!0x06002012!MYOB.Huxley.UI.Controllers.SalesAndPurchases.SendEmailController.SendEmail(String emailAddress, String subject, String message, IEnumerable`1 attachments) +0x6c
at Huxley.UI.Controllers!0x06002011!MYOB.Huxley.UI.Controllers.SalesAndPurchases.SendEmailController.SendEmail(String emailAddresses, String subject, String message) +0xb
at Huxley.UI.Forms!0x0600253d!MYOB.Huxley.UI.Forms.SalesAndPurchases.SendEmail.<OnOkClicked>b__22_0() +0x0
at Huxley.UI.Forms!0x060031f8!MYOB.Huxley.UI.Forms.BaseForms.BaseViewContainer.PerformAction(Action methodToPerform) +0x16
at Huxley.UI.Forms!0x0600251d!MYOB.Huxley.UI.Forms.SalesAndPurchases.SendEmail.OnOkClicked(ButtonClickedArgs args) +0x48
at Huxley.UI.Forms!0x06002ee0!MYOB.Huxley.UI.Forms.BaseForms.BaseViewForm.CallButtonClicked(Action`1 execute, ButtonClickedArgs args, String buttonText) +0x12
at Huxley.UI.Forms!0x06002e5a!MYOB.Huxley.UI.Forms.BaseForms.BaseViewForm.btnOk_Click(Object sender, EventArgs e) +0x30
at System.Windows.Forms!0x06000e16!System.Windows.Forms.Control.OnClick(EventArgs e) +0x19
at DevExpress.XtraEditors.v17.1!0x06000d4f!DevExpress.XtraEditors.BaseButton.OnClick(EventArgs e) +0x2e
at DevExpress.XtraEditors.v17.1!0x06000d48!DevExpress.XtraEditors.BaseButton.OnMouseUp(MouseEventArgs e) +0x1d
at System.Windows.Forms!0x06000efd!System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) +0x184
at System.Windows.Forms!0x06000f0d!System.Windows.Forms.Control.WndProc(Message& m) +0x62c
at DevExpress.Utils.v17.1!0x06002708!DevExpress.Utils.Controls.ControlBase.WndProc(Message& m) +0x2e
at DevExpress.XtraEditors.v17.1!0x06000256!DevExpress.XtraEditors.BaseControl.WndProc(Message& msg) +0x0
at System.Windows.Forms!0x0600571b!System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) +0x0
at System.Windows.Forms!0x0600571e!System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) +0x8e
at System.Windows.Forms!0x06002def!System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) +0x25
==========
MODULE: DevExpress.Utils.v17.1 => DevExpress.Utils.v17.1, Version=17.1.7.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a; G:b8c34c059b804930811d5f6d50999b6c; A:1
MODULE: DevExpress.XtraEditors.v17.1 => DevExpress.XtraEditors.v17.1, Version=17.1.7.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a; G:6df94e55f5bd4444b910d4b2a37076a4; A:1
MODULE: Huxley.MsOffice.Integration => Huxley.MsOffice.Integration, Version=2020.1.23.5508, Culture=neutral, PublicKeyToken=947f70fecdd4159f; G:f1da552f45fc4ac283ffd586525d3d56; A:1
MODULE: Huxley.UI.Controllers => Huxley.UI.Controllers, Version=2020.1.23.5508, Culture=neutral, PublicKeyToken=947f70fecdd4159f; G:3bf8ba1176c74d72ac7474560559dfa8; A:1
MODULE: Huxley.UI.Forms => Huxley.UI.Forms, Version=2020.1.23.5508, Culture=neutral, PublicKeyToken=947f70fecdd4159f; G:b7845fa915ff4d1382cc77fbc411f0ef; A:1
MODULE: Microsoft.Office.Interop.Outlook => Microsoft.Office.Interop.Outlook, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c;
MODULE: mscorlib => mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; G:2ea9736f9dc24c8789f43adaed256524; A:2
MODULE: System.Windows.Forms => System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; G:f151916e8df143d3846906613de0068f; A:1

----------------------------------------